189665136 has 30 divisors (see below), whose sum is σ = 530799360. Its totient is φ = 63221664.

The previous prime is 189665027. The next prime is 189665143. The reversal of 189665136 is 631566981.

189665136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189665091 and 189665100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 658416 + ... + 658703.

It is an arithmetic number, because the mean of its divisors is an integer number (17693312).

Almost surely, 2^189665136 is an apocalyptic number.

189665136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189665136 is an abundant number, since it is smaller than the sum of its proper divisors (341134224).

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

189665136 is a wasteful number, since it uses less digits than its factorization.

189665136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317133 (or 1317124 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 189665136 is about 13771.8966014126. The cubic root of 189665136 is about 574.5517726772.

The spelling of 189665136 in words is "one hundred eighty-nine million, six hundred sixty-five thousand, one hundred thirty-six".