138416922 has 48 divisors (see below), whose sum is σ = 353812992. Its totient is φ = 38270880.

The previous prime is 138416903. The next prime is 138416923. The reversal of 138416922 is 229614831.

It is not an unprimeable number, because it can be changed into a prime (138416923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13813 + ... + 21624.

It is an arithmetic number, because the mean of its divisors is an integer number (7371104).

Almost surely, 2^138416922 is an apocalyptic number.

138416922 is an abundant number, since it is smaller than the sum of its proper divisors (215396070).

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

138416922 is a wasteful number, since it uses less digits than its factorization.

138416922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35483 (or 35480 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 138416922 is about 11765.0721204759. The cubic root of 138416922 is about 517.2848142660.

The spelling of 138416922 in words is "one hundred thirty-eight million, four hundred sixteen thousand, nine hundred twenty-two".