189004331 has 2 divisors, whose sum is σ = 189004332. Its totient is φ = 189004330.

The previous prime is 189004327. The next prime is 189004367. The reversal of 189004331 is 133400981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189004331 - 2² = 189004327 is a prime.

It is a super-2 number, since 2×189004331² = 71445274273515122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 189004294 and 189004303.

It is not a weakly prime, because it can be changed into another prime (189004931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94502165 + 94502166.

It is an arithmetic number, because the mean of its divisors is an integer number (94502166).

Almost surely, 2^189004331 is an apocalyptic number.

189004331 is a deficient number, since it is larger than the sum of its proper divisors (1).

189004331 is an equidigital number, since it uses as much as digits as its factorization.

189004331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 189004331 is about 13747.8846009122. The cubic root of 189004331 is about 573.8837383458.

The spelling of 189004331 in words is "one hundred eighty-nine million, four thousand, three hundred thirty-one".