138347922 has 16 divisors (see below), whose sum is σ = 286237440. Its totient is φ = 44525712.

The previous prime is 138347917. The next prime is 138347933. The reversal of 138347922 is 229743831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397378 + ... + 397725.

It is an arithmetic number, because the mean of its divisors is an integer number (17889840).

Almost surely, 2^138347922 is an apocalyptic number.

138347922 is an abundant number, since it is smaller than the sum of its proper divisors (147889518).

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

138347922 is a wasteful number, since it uses less digits than its factorization.

138347922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795137.

The product of its digits is 72576, while the sum is 39.

The square root of 138347922 is about 11762.1393462244. The cubic root of 138347922 is about 517.1988455271.

The spelling of 138347922 in words is "one hundred thirty-eight million, three hundred forty-seven thousand, nine hundred twenty-two".