138137075 has 12 divisors (see below), whose sum is σ = 171448848. Its totient is φ = 110407200.

The previous prime is 138137059. The next prime is 138137081. The reversal of 138137075 is 570731831.

It is not a de Polignac number, because 138137075 - 2⁴ = 138137059 is a prime.

It is a hoax number, since the sum of its digits (35) 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36785 + ... + 40365.

It is an arithmetic number, because the mean of its divisors is an integer number (14287404).

Almost surely, 2^138137075 is an apocalyptic number.

138137075 is a deficient number, since it is larger than the sum of its proper divisors (33311773).

138137075 is a wasteful number, since it uses less digits than its factorization.

138137075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134 (or 5129 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 138137075 is about 11753.1729758393. The cubic root of 138137075 is about 516.9359689839.

The spelling of 138137075 in words is "one hundred thirty-eight million, one hundred thirty-seven thousand, seventy-five".