189529431 has 32 divisors (see below), whose sum is σ = 316915200. Its totient is φ = 98077824.

The previous prime is 189529411. The next prime is 189529451. The reversal of 189529431 is 134925981.

It is an interprime number because it is at equal distance from previous prime (189529411) and next prime (189529451).

It is not a de Polignac number, because 189529431 - 2⁷ = 189529303 is a prime.

It is a super-2 number, since 2×189529431² = 71842810430367522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189529411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7920 + ... + 21018.

It is an arithmetic number, because the mean of its divisors is an integer number (9903600).

Almost surely, 2^189529431 is an apocalyptic number.

189529431 is a deficient number, since it is larger than the sum of its proper divisors (127385769).

189529431 is a wasteful number, since it uses less digits than its factorization.

189529431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13175.

The product of its digits is 77760, while the sum is 42.

The square root of 189529431 is about 13766.9688384916. The cubic root of 189529431 is about 574.4147097936.

The spelling of 189529431 in words is "one hundred eighty-nine million, five hundred twenty-nine thousand, four hundred thirty-one".