138558974 has 8 divisors (see below), whose sum is σ = 209233800. Its totient is φ = 68814376.

The previous prime is 138558949. The next prime is 138558977. The reversal of 138558974 is 479855831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138558977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232184 + ... + 232779.

It is an arithmetic number, because the mean of its divisors is an integer number (26154225).

Almost surely, 2^138558974 is an apocalyptic number.

138558974 is a deficient number, since it is larger than the sum of its proper divisors (70674826).

138558974 is a wasteful number, since it uses less digits than its factorization.

138558974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465114.

The product of its digits is 1209600, while the sum is 50.

The square root of 138558974 is about 11771.1075944450. The cubic root of 138558974 is about 517.4617103147.

The spelling of 138558974 in words is "one hundred thirty-eight million, five hundred fifty-eight thousand, nine hundred seventy-four".