4D number history
4D number 1821 — drawn 13 times across our 10 tracked operators, most recently on 2026-05-16.
Most recently drawn as Special prize at STC Sandakan 4D on 2026-05-16.
Wins of 1821 by operator
| Operator | Total wins | Last seen |
|---|---|---|
| Lucky Hari Hari 4D | 3 | 2025-08-31 |
| Singapore Pools 4D | 3 | 2025-08-27 |
| Perdana 4D | 2 | 2025-11-13 |
| STC Sandakan 4D | 2 | 2026-05-16 |
| Sports Toto 4D | 2 | 2025-12-06 |
| Damacai 1+3D | 1 | 2025-06-01 |
Every recorded draw of 1821
| Date | Operator | Prize tier |
|---|---|---|
| 2026-05-16 | STC Sandakan 4D | Special prize |
| 2025-12-06 | Sports Toto 4D | Consolation |
| 2025-11-13 | Perdana 4D | Special prize |
| 2025-08-31 | Lucky Hari Hari 4D | 2nd prize |
| 2025-08-27 | Singapore Pools 4D | Consolation |
| 2025-07-09 | STC Sandakan 4D | Special prize |
| 2025-06-01 | Damacai 1+3D | Special prize |
| 2025-01-04 | Lucky Hari Hari 4D | Consolation |
| 2024-11-02 | Singapore Pools 4D | Consolation |
| 2024-04-12 | Perdana 4D | Special prize |
| 2024-02-20 | Sports Toto 4D | Consolation |
| 2024-01-24 | Singapore Pools 4D | Special prize |
| 2024-01-23 | Lucky Hari Hari 4D | Special prize |
Number facts — 1821
A read of the four digits of 1821 on their own — these properties hold whether or not the number has ever been drawn. Most serve no statistical purpose for a random 4D draw, but they're useful context when comparing numbers or choosing iBox plays.
| Digit sum | 1 + 8 + 2 + 1 = 12 |
|---|---|
| Digit product | 1 × 8 × 2 × 1 = 16 |
| Reverse | 1281 |
| Palindrome | No |
| Unique digits | 3 of 4 |
| Sequential pairs | 18, 82, 21 |
| Big/Small bias | 3 small (0–4) / 1 big (5–9) — leans Small |
| Parity | Odd |
| Prime | No — 1821 = 3 × 607 |
iBox / Permutation play — 1821
For an iBox or Permutation bet, your ticket wins if the operator draws any arrangement of the same four digits. The unique arrangements for 1821 are listed below — there are 12 permutations total (repeated digits collapse the 24 possibilities down to 12).
Nearby numbers
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Numbers that differ from 1821 by one digit:
Cultural reading of 1821
In Malaysian, Singaporean, and Cambodian Chinese 4D culture, individual digits carry phonetic associations through Cantonese homophones. These are widely shared folk readings — not predictions and not statistical claims.
| Digit | Sound | Common association |
|---|---|---|
| 1 | yat (一) | single, the start, certainty |
| 8 | baat (八) | prosperity (similar to 發 faat); the most auspicious digit |
| 2 | yi (二) | easy (similar to 易 yi), pairing |
| 1 | yat (一) | single, the start, certainty |
Combined reading: Contains one 8 — phonetic to 發 (faat), commonly cited as auspicious. Contains both 2 (易 yi, "easy") and 1 (一 yat, "start") — a combination sometimes read as "easy starts". The digit sum is 12.
Hot or cold?
1821 has appeared 13 times — comfortably in the "hot" range across our window.
For the full picture, see the hottest and coldest numbers tool which ranks every drawn 4-digit number across all 10 operators.
Check this number at each operator
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Frequently asked questions
- Has 4D number 1821 ever won?
- Yes — 1821 has been recorded as a winning number 13 times across the 10 4D operators 4dcheck tracks.
- When was the most recent time 1821 won?
- The most recent recorded draw of 1821 was on 2026-05-16 at STC Sandakan 4D.
- Which operator has drawn 1821 most often?
- Lucky Hari Hari 4D has drawn 1821 the most times in our recorded window.
- Is 1821 a hot or cold number?
- 1821 sits on the hotter side of our distribution, with 13 recorded wins. Note this is a backward-looking statistic and does not affect future draw probability.
- How many iBox permutations does 1821 have?
- 1821 has 12 unique 4-digit permutations — listed under the iBox section above. Each one wins if you bet 1821 on a permutation (iBox) play and that arrangement is drawn.
- What is the digit sum of 1821?
- The digits 1 + 8 + 2 + 1 sum to 12.