138165052 has 12 divisors (see below), whose sum is σ = 256011840. Its totient is φ = 65018816.

The previous prime is 138165023. The next prime is 138165073. The reversal of 138165052 is 250561831.

138165052 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 3 ways as a sum of consecutive naturals, for example, 1015852 + ... + 1015987.

It is an arithmetic number, because the mean of its divisors is an integer number (21334320).

Almost surely, 2^138165052 is an apocalyptic number.

It is an amenable number.

138165052 is a deficient number, since it is larger than the sum of its proper divisors (117846788).

138165052 is a wasteful number, since it uses less digits than its factorization.

138165052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031860 (or 2031858 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 138165052 is about 11754.3631048220. The cubic root of 138165052 is about 516.9708650979.

The spelling of 138165052 in words is "one hundred thirty-eight million, one hundred sixty-five thousand, fifty-two".