138106522 has 8 divisors (see below), whose sum is σ = 209655936. Its totient is φ = 68221212.

The previous prime is 138106517. The next prime is 138106541. The reversal of 138106522 is 225601831.

138106522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×138106522² = 38146822837872968, which contains 22 as substring.

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, 415818 + ... + 416149.

It is an arithmetic number, because the mean of its divisors is an integer number (26206992).

Almost surely, 2^138106522 is an apocalyptic number.

138106522 is a deficient number, since it is larger than the sum of its proper divisors (71549414).

138106522 is an equidigital number, since it uses as much as digits as its factorization.

138106522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832052.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 138106522 is about 11751.8731272934. The cubic root of 138106522 is about 516.8978544052.

The spelling of 138106522 in words is "one hundred thirty-eight million, one hundred six thousand, five hundred twenty-two".