2639130756 has 12 divisors (see below), whose sum is σ = 6157971792. Its totient is φ = 879710248.

The previous prime is 2639130751. The next prime is 2639130757. The reversal of 2639130756 is 6570319362.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2639130756² = 13930022294530263072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2639130751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109963770 + ... + 109963793.

It is an arithmetic number, because the mean of its divisors is an integer number (513164316).

Almost surely, 2^2639130756 is an apocalyptic number.

It is an amenable number.

2639130756 is an abundant number, since it is smaller than the sum of its proper divisors (3518841036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2639130756 is a wasteful number, since it uses less digits than its factorization.

2639130756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219927570 (or 219927568 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 2639130756 is about 51372.4707990573. The cubic root of 2639130756 is about 1381.9329413729.

The spelling of 2639130756 in words is "two billion, six hundred thirty-nine million, one hundred thirty thousand, seven hundred fifty-six".