138933610 has 16 divisors (see below), whose sum is σ = 252510336. Its totient is φ = 55033488.

The previous prime is 138933601. The next prime is 138933629. The reversal of 138933610 is 16339831.

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, 66414 + ... + 68473.

It is an arithmetic number, because the mean of its divisors is an integer number (15781896).

Almost surely, 2^138933610 is an apocalyptic number.

138933610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138933610 is a deficient number, since it is larger than the sum of its proper divisors (113576726).

138933610 is a wasteful number, since it uses less digits than its factorization.

138933610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134997.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 138933610 is about 11787.0102231227. The cubic root of 138933610 is about 517.9276619169.

The spelling of 138933610 in words is "one hundred thirty-eight million, nine hundred thirty-three thousand, six hundred ten".