138514956 has 24 divisors (see below), whose sum is σ = 324992304. Its totient is φ = 45915840.

The previous prime is 138514951. The next prime is 138514967. The reversal of 138514956 is 659415831.

It is not an unprimeable number, because it can be changed into a prime (138514951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29715 + ... + 34058.

It is an arithmetic number, because the mean of its divisors is an integer number (13541346).

Almost surely, 2^138514956 is an apocalyptic number.

It is an amenable number.

138514956 is an abundant number, since it is smaller than the sum of its proper divisors (186477348).

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

138514956 is a wasteful number, since it uses less digits than its factorization.

138514956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63961 (or 63959 counting only the distinct ones).

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

The square root of 138514956 is about 11769.2376983388. The cubic root of 138514956 is about 517.4069080373.

The spelling of 138514956 in words is "one hundred thirty-eight million, five hundred fourteen thousand, nine hundred fifty-six".