In Mathematics
- 189 is an odd number
- 189 is a centered cube number
- 189 is a composite number
- 189 is a deficient number, as 131 is less than 189
- 189 is a heptagonal number
- 189 is a lucky number
- 189 is an ulam number
- 189 is a 64-gonal number
- Binary: 10111101, a palindromic number that remains unchanged upon reversal of its numbers
- 189 is 33 × 7
- Divisors of 189: 1, 3, 7, 9, 21, 27, 63, 189
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