138574892 has 6 divisors (see below), whose sum is σ = 242506068. Its totient is φ = 69287444.

The previous prime is 138574873. The next prime is 138574897. The reversal of 138574892 is 298475831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (138574897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17321858 + ... + 17321865.

It is an arithmetic number, because the mean of its divisors is an integer number (40417678).

Almost surely, 2^138574892 is an apocalyptic number.

It is an amenable number.

138574892 is a deficient number, since it is larger than the sum of its proper divisors (103931176).

138574892 is a wasteful number, since it uses less digits than its factorization.

138574892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34643727 (or 34643725 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 138574892 is about 11771.7837221043. The cubic root of 138574892 is about 517.4815253193.

The spelling of 138574892 in words is "one hundred thirty-eight million, five hundred seventy-four thousand, eight hundred ninety-two".