138902819094 has 24 divisors (see below), whose sum is σ = 324106578432. Its totient is φ = 42739328880.

The previous prime is 138902819089. The next prime is 138902819101. The reversal of 138902819094 is 490918209831.

It is a self number, because there is not a number n which added to its sum of digits gives 138902819094.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296800662 + ... + 296801129.

It is an arithmetic number, because the mean of its divisors is an integer number (13504440768).

Almost surely, 2^138902819094 is an apocalyptic number.

138902819094 is an abundant number, since it is smaller than the sum of its proper divisors (185203759338).

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

138902819094 is a wasteful number, since it uses less digits than its factorization.

138902819094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593601812 (or 593601809 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 138902819094 in words is "one hundred thirty-eight billion, nine hundred two million, eight hundred nineteen thousand, ninety-four".