138957022 has 4 divisors (see below), whose sum is σ = 208435536. Its totient is φ = 69478510.

The previous prime is 138957017. The next prime is 138957041. The reversal of 138957022 is 220759831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 34739254 + ... + 34739257.

It is an arithmetic number, because the mean of its divisors is an integer number (52108884).

Almost surely, 2^138957022 is an apocalyptic number.

138957022 is a deficient number, since it is larger than the sum of its proper divisors (69478514).

138957022 is an equidigital number, since it uses as much as digits as its factorization.

138957022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69478513.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 138957022 is about 11788.0033084488. The cubic root of 138957022 is about 517.9567526493.

The spelling of 138957022 in words is "one hundred thirty-eight million, nine hundred fifty-seven thousand, twenty-two".