138222875 has 24 divisors (see below), whose sum is σ = 200674656. Its totient is φ = 94777200.

The previous prime is 138222841. The next prime is 138222907. The reversal of 138222875 is 578222831.

138222875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138222875 - 2⁸ = 138222619 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5159 + ... + 17408.

It is an arithmetic number, because the mean of its divisors is an integer number (8361444).

Almost surely, 2^138222875 is an apocalyptic number.

138222875 is a deficient number, since it is larger than the sum of its proper divisors (62451781).

138222875 is an equidigital number, since it uses as much as digits as its factorization.

138222875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22596 (or 22579 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 138222875 is about 11756.8224873900. The cubic root of 138222875 is about 517.0429736298.

The spelling of 138222875 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, eight hundred seventy-five".