2139753591 has 20 divisors (see below), whose sum is σ = 3200148952. Its totient is φ = 1424839248.

The previous prime is 2139753587. The next prime is 2139753601. The reversal of 2139753591 is 1953579312.

2139753591 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 7 + 53 + 591 = 666.

It is not a de Polignac number, because 2139753591 - 2² = 2139753587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139753541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56565 + ... + 86481.

Almost surely, 2^2139753591 is an apocalyptic number.

2139753591 is a deficient number, since it is larger than the sum of its proper divisors (1060395361).

2139753591 is an equidigital number, since it uses as much as digits as its factorization.

2139753591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30812 (or 30803 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 2139753591 is about 46257.4706506960. The cubic root of 2139753591 is about 1288.6092800342.

The spelling of 2139753591 in words is "two billion, one hundred thirty-nine million, seven hundred fifty-three thousand, five hundred ninety-one".