2139475317 has 16 divisors (see below), whose sum is σ = 3261624960. Its totient is φ = 1222005312.

The previous prime is 2139475307. The next prime is 2139475337. The reversal of 2139475317 is 7135749312.

It is not a de Polignac number, because 2139475317 - 2⁸ = 2139475061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139475307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27159 + ... + 70827.

It is an arithmetic number, because the mean of its divisors is an integer number (203851560).

Almost surely, 2^2139475317 is an apocalyptic number.

It is an amenable number.

2139475317 is a deficient number, since it is larger than the sum of its proper divisors (1122149643).

2139475317 is a wasteful number, since it uses less digits than its factorization.

2139475317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46012.

The product of its digits is 158760, while the sum is 42.

The square root of 2139475317 is about 46254.4626711845. The cubic root of 2139475317 is about 1288.5534165918.

The spelling of 2139475317 in words is "two billion, one hundred thirty-nine million, four hundred seventy-five thousand, three hundred seventeen".