9139173957 has 12 divisors (see below), whose sum is σ = 13204455264. Its totient is φ = 6091201320.

The previous prime is 9139173929. The next prime is 9139174001. The reversal of 9139173957 is 7593719319.

It is a happy number.

It is not a de Polignac number, because 9139173957 - 2⁶ = 9139173893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139171957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94623 + ... + 165020.

It is an arithmetic number, because the mean of its divisors is an integer number (1100371272).

Almost surely, 2^9139173957 is an apocalyptic number.

It is an amenable number.

9139173957 is a deficient number, since it is larger than the sum of its proper divisors (4065281307).

9139173957 is a wasteful number, since it uses less digits than its factorization.

9139173957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263560 (or 263557 counting only the distinct ones).

The product of its digits is 1607445, while the sum is 54.

The square root of 9139173957 is about 95599.0269668055. The cubic root of 9139173957 is about 2090.7510069385.

The spelling of 9139173957 in words is "nine billion, one hundred thirty-nine million, one hundred seventy-three thousand, nine hundred fifty-seven".