138758394 has 8 divisors (see below), whose sum is σ = 277516800. Its totient is φ = 46252796.

The previous prime is 138758341. The next prime is 138758419. The reversal of 138758394 is 493857831.

It is a sphenic number, since it is the product of 3 distinct primes.

138758394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11563194 + ... + 11563205.

It is an arithmetic number, because the mean of its divisors is an integer number (34689600).

Almost surely, 2^138758394 is an apocalyptic number.

138758394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138758394 is a wasteful number, since it uses less digits than its factorization.

138758394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23126404.

The product of its digits is 725760, while the sum is 48.

The square root of 138758394 is about 11779.5752894576. The cubic root of 138758394 is about 517.7098423186.

The spelling of 138758394 in words is "one hundred thirty-eight million, seven hundred fifty-eight thousand, three hundred ninety-four".