138837755 has 16 divisors (see below), whose sum is σ = 194836224. Its totient is φ = 92988000.

The previous prime is 138837739. The next prime is 138837763. The reversal of 138837755 is 557738831.

138837755 = 340² + 341² + ... + 769².

It is not a de Polignac number, because 138837755 - 2⁴ = 138837739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44621 + ... + 47630.

It is an arithmetic number, because the mean of its divisors is an integer number (12177264).

Almost surely, 2^138837755 is an apocalyptic number.

138837755 is a deficient number, since it is larger than the sum of its proper divisors (55998469).

138837755 is an equidigital number, since it uses as much as digits as its factorization.

138837755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92306.

The product of its digits is 705600, while the sum is 47.

The square root of 138837755 is about 11782.9433928879. The cubic root of 138837755 is about 517.8085225719.

The spelling of 138837755 in words is "one hundred thirty-eight million, eight hundred thirty-seven thousand, seven hundred fifty-five".