2639147536 has 20 divisors (see below), whose sum is σ = 5139310572. Its totient is φ = 1312873856.

The previous prime is 2639147449. The next prime is 2639147543. The reversal of 2639147536 is 6357419362.

It can be written as a sum of positive squares in 2 ways, for example, as 2213137936 + 426009600 = 47044^2 + 20640^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415495 + ... + 421798.

Almost surely, 2^2639147536 is an apocalyptic number.

It is an amenable number.

2639147536 is a deficient number, since it is larger than the sum of its proper divisors (2500163036).

2639147536 is a wasteful number, since it uses less digits than its factorization.

2639147536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837498 (or 837492 counting only the distinct ones).

The product of its digits is 816480, while the sum is 46.

The square root of 2639147536 is about 51372.6341158403. The cubic root of 2639147536 is about 1381.9358702143.

The spelling of 2639147536 in words is "two billion, six hundred thirty-nine million, one hundred forty-seven thousand, five hundred thirty-six".