138817674 has 24 divisors (see below), whose sum is σ = 307768032. Its totient is φ = 45196200.

The previous prime is 138817669. The next prime is 138817681. The reversal of 138817674 is 476718831.

It is a super-2 number, since 2×138817674² = 38540693229540552, which contains 22 as substring.

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, 88902 + ... + 90449.

It is an arithmetic number, because the mean of its divisors is an integer number (12823668).

Almost surely, 2^138817674 is an apocalyptic number.

138817674 is an abundant number, since it is smaller than the sum of its proper divisors (168950358).

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

138817674 is a wasteful number, since it uses less digits than its factorization.

138817674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179402 (or 179399 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 138817674 is about 11782.0912405226. The cubic root of 138817674 is about 517.7835567061.

The spelling of 138817674 in words is "one hundred thirty-eight million, eight hundred seventeen thousand, six hundred seventy-four".