138165204 has 24 divisors (see below), whose sum is σ = 322805728. Its totient is φ = 45995040.

The previous prime is 138165199. The next prime is 138165221. The reversal of 138165204 is 402561831.

138165204 is digitally balanced in base 2 and base 3, because in such bases 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, 2634 + ... + 16830.

Almost surely, 2^138165204 is an apocalyptic number.

It is an amenable number.

138165204 is an abundant number, since it is smaller than the sum of its proper divisors (184640524).

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

138165204 is a wasteful number, since it uses less digits than its factorization.

138165204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15015 (or 15013 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 138165204 is about 11754.3695705044. The cubic root of 138165204 is about 516.9710546768.

The spelling of 138165204 in words is "one hundred thirty-eight million, one hundred sixty-five thousand, two hundred four".