138898374 has 16 divisors (see below), whose sum is σ = 280661808. Its totient is φ = 45821952.

The previous prime is 138898363. The next prime is 138898393. The reversal of 138898374 is 473898831.

138898374 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 7 ways as a sum of consecutive naturals, for example, 118747 + ... + 119910.

It is an arithmetic number, because the mean of its divisors is an integer number (17541363).

Almost surely, 2^138898374 is an apocalyptic number.

138898374 is an abundant number, since it is smaller than the sum of its proper divisors (141763434).

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

138898374 is a wasteful number, since it uses less digits than its factorization.

138898374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238759.

The product of its digits is 1161216, while the sum is 51.

The square root of 138898374 is about 11785.5154320887. The cubic root of 138898374 is about 517.8838730355.

The spelling of 138898374 in words is "one hundred thirty-eight million, eight hundred ninety-eight thousand, three hundred seventy-four".