2502972638 has 16 divisors (see below), whose sum is σ = 4043973120. Its totient is φ = 1158045336.

The previous prime is 2502972623. The next prime is 2502972691. The reversal of 2502972638 is 8362792052.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764270 + ... + 767537.

It is an arithmetic number, because the mean of its divisors is an integer number (252748320).

Almost surely, 2^2502972638 is an apocalyptic number.

2502972638 is a deficient number, since it is larger than the sum of its proper divisors (1541000482).

2502972638 is a wasteful number, since it uses less digits than its factorization.

2502972638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531871.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2502972638 is about 50029.7175486730. The cubic root of 2502972638 is about 1357.7465272915.

The spelling of 2502972638 in words is "two billion, five hundred two million, nine hundred seventy-two thousand, six hundred thirty-eight".