138965154 has 16 divisors (see below), whose sum is σ = 284709600. Its totient is φ = 45191840.

The previous prime is 138965147. The next prime is 138965171. The reversal of 138965154 is 451569831.

It is a super-2 number, since 2×138965154² = 38622628052487432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282204 + ... + 282695.

It is an arithmetic number, because the mean of its divisors is an integer number (17794350).

Almost surely, 2^138965154 is an apocalyptic number.

138965154 is an abundant number, since it is smaller than the sum of its proper divisors (145744446).

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

138965154 is a wasteful number, since it uses less digits than its factorization.

138965154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564945.

The product of its digits is 129600, while the sum is 42.

The square root of 138965154 is about 11788.3482303502. The cubic root of 138965154 is about 517.9668563540.

The spelling of 138965154 in words is "one hundred thirty-eight million, nine hundred sixty-five thousand, one hundred fifty-four".