189731164 has 12 divisors (see below), whose sum is σ = 379462384. Its totient is φ = 81313344.

The previous prime is 189731147. The next prime is 189731173. The reversal of 189731164 is 461137981.

189731164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

189731164 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388029 + ... + 3388084.

Almost surely, 2^189731164 is an apocalyptic number.

189731164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189731164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189731164 is a wasteful number, since it uses less digits than its factorization.

189731164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776124 (or 6776122 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 189731164 is about 13774.2935935024. The cubic root of 189731164 is about 574.6184377197.

The spelling of 189731164 in words is "one hundred eighty-nine million, seven hundred thirty-one thousand, one hundred sixty-four".