138868074 has 32 divisors (see below), whose sum is σ = 324840000. Its totient is φ = 43852752.

The previous prime is 138868063. The next prime is 138868091. The reversal of 138868074 is 470868831.

138868074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66649 + ... + 68700.

It is an arithmetic number, because the mean of its divisors is an integer number (10151250).

Almost surely, 2^138868074 is an apocalyptic number.

138868074 is an abundant number, since it is smaller than the sum of its proper divisors (185971926).

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

138868074 is a wasteful number, since it uses less digits than its factorization.

138868074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135379 (or 135373 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 138868074 is about 11784.2298857414. The cubic root of 138868074 is about 517.8462123534.

The spelling of 138868074 in words is "one hundred thirty-eight million, eight hundred sixty-eight thousand, seventy-four".