189431125 has 32 divisors (see below), whose sum is σ = 260612352. Its totient is φ = 136584000.

The previous prime is 189431113. The next prime is 189431147. The reversal of 189431125 is 521134981.

It is not a de Polignac number, because 189431125 - 2⁵ = 189431093 is a prime.

It is a super-2 number, since 2×189431125² = 71768302237531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68520 + ... + 71230.

It is an arithmetic number, because the mean of its divisors is an integer number (8144136).

Almost surely, 2^189431125 is an apocalyptic number.

It is an amenable number.

189431125 is a deficient number, since it is larger than the sum of its proper divisors (71181227).

189431125 is a wasteful number, since it uses less digits than its factorization.

189431125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2772 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 189431125 is about 13763.3980179315. The cubic root of 189431125 is about 574.3153792603.

The spelling of 189431125 in words is "one hundred eighty-nine million, four hundred thirty-one thousand, one hundred twenty-five".