138797118 has 16 divisors (see below), whose sum is σ = 308438160. Its totient is φ = 46265688.

The previous prime is 138797093. The next prime is 138797173. The reversal of 138797118 is 811797831.

It is a happy number.

It is a congruent number.

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, 1285105 + ... + 1285212.

It is an arithmetic number, because the mean of its divisors is an integer number (19277385).

Almost surely, 2^138797118 is an apocalyptic number.

138797118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138797118 is an abundant number, since it is smaller than the sum of its proper divisors (169641042).

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

138797118 is a wasteful number, since it uses less digits than its factorization.

138797118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570328 (or 2570322 counting only the distinct ones).

The product of its digits is 84672, while the sum is 45.

The square root of 138797118 is about 11781.2188673329. The cubic root of 138797118 is about 517.7579977988.

The spelling of 138797118 in words is "one hundred thirty-eight million, seven hundred ninety-seven thousand, one hundred eighteen".