138518076 has 48 divisors (see below), whose sum is σ = 330825600. Its totient is φ = 45095232.

The previous prime is 138518063. The next prime is 138518077. The reversal of 138518076 is 670815831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138518077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126186 + ... + 127278.

It is an arithmetic number, because the mean of its divisors is an integer number (6892200).

Almost surely, 2^138518076 is an apocalyptic number.

It is an amenable number.

138518076 is an abundant number, since it is smaller than the sum of its proper divisors (192307524).

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

138518076 is a wasteful number, since it uses less digits than its factorization.

138518076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 138518076 is about 11769.3702465340. The cubic root of 138518076 is about 517.4107928101.

The spelling of 138518076 in words is "one hundred thirty-eight million, five hundred eighteen thousand, seventy-six".