189431080 has 32 divisors (see below), whose sum is σ = 439971840. Its totient is φ = 73327680.

The previous prime is 189431069. The next prime is 189431093. The reversal of 189431080 is 80134981.

It is a happy number.

189431080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75144 + ... + 77623.

It is an arithmetic number, because the mean of its divisors is an integer number (13749120).

Almost surely, 2^189431080 is an apocalyptic number.

189431080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189431080 is an abundant number, since it is smaller than the sum of its proper divisors (250540760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189431080 is a wasteful number, since it uses less digits than its factorization.

189431080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152809 (or 152805 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 189431080 is about 13763.3963831607. The cubic root of 189431080 is about 574.3153337834.

The spelling of 189431080 in words is "one hundred eighty-nine million, four hundred thirty-one thousand, eighty".