2638124646 has 32 divisors (see below), whose sum is σ = 5366995200. Its totient is φ = 864376800.

The previous prime is 2638124639. The next prime is 2638124647. The reversal of 2638124646 is 6464218362.

It is a junction number, because it is equal to n+sod(n) for n = 2638124598 and 2638124607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638124647) 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, 68575 + ... + 99893.

It is an arithmetic number, because the mean of its divisors is an integer number (167718600).

Almost surely, 2^2638124646 is an apocalyptic number.

2638124646 is an abundant number, since it is smaller than the sum of its proper divisors (2728870554).

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

2638124646 is a wasteful number, since it uses less digits than its factorization.

2638124646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31564.

The product of its digits is 331776, while the sum is 42.

The square root of 2638124646 is about 51362.6775587099. The cubic root of 2638124646 is about 1381.7573086361.

The spelling of 2638124646 in words is "two billion, six hundred thirty-eight million, one hundred twenty-four thousand, six hundred forty-six".