138016775 has 12 divisors (see below), whose sum is σ = 184305912. Its totient is φ = 101919840.

The previous prime is 138016757. The next prime is 138016787. The reversal of 138016775 is 577610831.

It is not a de Polignac number, because 138016775 - 2⁸ = 138016519 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212009 + ... + 212658.

It is an arithmetic number, because the mean of its divisors is an integer number (15358826).

Almost surely, 2^138016775 is an apocalyptic number.

138016775 is a deficient number, since it is larger than the sum of its proper divisors (46289137).

138016775 is a wasteful number, since it uses less digits than its factorization.

138016775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424690 (or 424685 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 138016775 is about 11748.0540941894. The cubic root of 138016775 is about 516.7858633533.

The spelling of 138016775 in words is "one hundred thirty-eight million, sixteen thousand, seven hundred seventy-five".