2504530638 has 48 divisors (see below), whose sum is σ = 5874014160. Its totient is φ = 790898256.

The previous prime is 2504530621. The next prime is 2504530649. The reversal of 2504530638 is 8360354052.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44745 + ... + 83732.

It is an arithmetic number, because the mean of its divisors is an integer number (122375295).

Almost surely, 2^2504530638 is an apocalyptic number.

2504530638 is an abundant number, since it is smaller than the sum of its proper divisors (3369483522).

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

2504530638 is a wasteful number, since it uses less digits than its factorization.

2504530638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128526 (or 128501 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2504530638 is about 50045.2858718981. The cubic root of 2504530638 is about 1358.0281830980.

The spelling of 2504530638 in words is "two billion, five hundred four million, five hundred thirty thousand, six hundred thirty-eight".