138115192 has 16 divisors (see below), whose sum is σ = 259128000. Its totient is φ = 69014400.

The previous prime is 138115189. The next prime is 138115213. The reversal of 138115192 is 291511831.

138115192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138115192² = 38151612522393728, which contains 22 as substring.

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, 11184 + ... + 20032.

It is an arithmetic number, because the mean of its divisors is an integer number (16195500).

Almost surely, 2^138115192 is an apocalyptic number.

It is an amenable number.

138115192 is a deficient number, since it is larger than the sum of its proper divisors (121012808).

138115192 is a wasteful number, since it uses less digits than its factorization.

138115192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806 (or 10802 counting only the distinct ones).

The product of its digits is 2160, while the sum is 31.

The square root of 138115192 is about 11752.2419988698. The cubic root of 138115192 is about 516.9086707195.

The spelling of 138115192 in words is "one hundred thirty-eight million, one hundred fifteen thousand, one hundred ninety-two".