138125358 has 32 divisors (see below), whose sum is σ = 350795520. Its totient is φ = 39464280.

The previous prime is 138125353. The next prime is 138125359. The reversal of 138125358 is 853521831.

It is a super-2 number, since 2×138125358² = 38157229045256328, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138125353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182328 + ... + 183083.

It is an arithmetic number, because the mean of its divisors is an integer number (10962360).

Almost surely, 2^138125358 is an apocalyptic number.

138125358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138125358 is an abundant number, since it is smaller than the sum of its proper divisors (212670162).

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

138125358 is a wasteful number, since it uses less digits than its factorization.

138125358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365429 (or 365423 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 138125358 is about 11752.6745041288. The cubic root of 138125358 is about 516.9213528016.

The spelling of 138125358 in words is "one hundred thirty-eight million, one hundred twenty-five thousand, three hundred fifty-eight".