189608664 has 32 divisors (see below), whose sum is σ = 541739520. Its totient is φ = 54173856.

The previous prime is 189608647. The next prime is 189608687. The reversal of 189608664 is 466806981.

189608664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 564144 + ... + 564479.

It is an arithmetic number, because the mean of its divisors is an integer number (16929360).

Almost surely, 2^189608664 is an apocalyptic number.

189608664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189608664 is an abundant number, since it is smaller than the sum of its proper divisors (352130856).

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

189608664 is a wasteful number, since it uses less digits than its factorization.

189608664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128639 (or 1128635 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 189608664 is about 13769.8461865048. The cubic root of 189608664 is about 574.4947435553.

The spelling of 189608664 in words is "one hundred eighty-nine million, six hundred eight thousand, six hundred sixty-four".