137731868 has 12 divisors (see below), whose sum is σ = 241352832. Its totient is φ = 68773920.

The previous prime is 137731859. The next prime is 137731873. The reversal of 137731868 is 868137731.

137731868 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, 19580 + ... + 25667.

It is an arithmetic number, because the mean of its divisors is an integer number (20112736).

Almost surely, 2^137731868 is an apocalyptic number.

It is an amenable number.

137731868 is a deficient number, since it is larger than the sum of its proper divisors (103620964).

137731868 is a wasteful number, since it uses less digits than its factorization.

137731868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46012 (or 46010 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 137731868 is about 11735.9221197143. The cubic root of 137731868 is about 516.4300193167.

The spelling of 137731868 in words is "one hundred thirty-seven million, seven hundred thirty-one thousand, eight hundred sixty-eight".