189038180 has 24 divisors (see below), whose sum is σ = 407710968. Its totient is φ = 73571328.

The previous prime is 189038137. The next prime is 189038197. The reversal of 189038180 is 81830981.

189038180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27646564 + 161391616 = 5258^2 + 12704^2 .

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, 126989 + ... + 128468.

It is an arithmetic number, because the mean of its divisors is an integer number (16987957).

Almost surely, 2^189038180 is an apocalyptic number.

189038180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189038180 is an abundant number, since it is smaller than the sum of its proper divisors (218672788).

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

189038180 is a wasteful number, since it uses less digits than its factorization.

189038180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255503 (or 255501 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 189038180 is about 13749.1156079218. The cubic root of 189038180 is about 573.9179954641.

The spelling of 189038180 in words is "one hundred eighty-nine million, thirty-eight thousand, one hundred eighty".