MathQuarryCalculators

Primes / Is 189 prime?

Is 189 a Prime Number?

No189 = 3^3 x 7

189 is NOT prime: 3 × 63 = 189. That makes 3 a genuine divisor of 189 beyond 1 and 189 itself. Fully broken down, 189 = 3^3 × 7, for 8 divisors total. 189 sits between primes 181 and 191, 8 below and 2 above. 189: 3, 7, 9 divide 189 evenly, checked against 2-12. 189 is odd, digit sum 18 for 189, digital root 9 for 189. 189 has 6 primes within 10 of 189.

Factors
1, 3, 7, 9, 21, 27, 63, 189
Number of factors
8
Prime?
No
Prime factorization
3^3 x 7
Even or odd
Odd
Square
35721
Cube
6751269
Binary
10111101
Hexadecimal
BD
Roman numeral
CLXXXIX
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Full facts for 189 →Factors of 189 →