138976330 has 16 divisors (see below), whose sum is σ = 250489440. Its totient is φ = 55516752.

The previous prime is 138976297. The next prime is 138976333. The reversal of 138976330 is 33679831.

It is not an unprimeable number, because it can be changed into a prime (138976333) 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, 960 + ... + 16699.

It is an arithmetic number, because the mean of its divisors is an integer number (15655590).

Almost surely, 2^138976330 is an apocalyptic number.

138976330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138976330 is a deficient number, since it is larger than the sum of its proper divisors (111513110).

138976330 is a wasteful number, since it uses less digits than its factorization.

138976330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18453.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 138976330 is about 11788.8222482146. The cubic root of 138976330 is about 517.9807414713.

The spelling of 138976330 in words is "one hundred thirty-eight million, nine hundred seventy-six thousand, three hundred thirty".