2636647793 has 16 divisors (see below), whose sum is σ = 3011976576. Its totient is φ = 2286485760.

The previous prime is 2636647789. The next prime is 2636647921. The reversal of 2636647793 is 3977466362.

It is not a de Polignac number, because 2636647793 - 2² = 2636647789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2636647753) 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, 113828 + ... + 135018.

It is an arithmetic number, because the mean of its divisors is an integer number (188248536).

Almost surely, 2^2636647793 is an apocalyptic number.

It is an amenable number.

2636647793 is a deficient number, since it is larger than the sum of its proper divisors (375328783).

2636647793 is a wasteful number, since it uses less digits than its factorization.

2636647793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784.

The product of its digits is 6858432, while the sum is 53.

The square root of 2636647793 is about 51348.2988325806. The cubic root of 2636647793 is about 1381.4994192118.

The spelling of 2636647793 in words is "two billion, six hundred thirty-six million, six hundred forty-seven thousand, seven hundred ninety-three".