2479988643 has 16 divisors (see below), whose sum is σ = 3642976512. Its totient is φ = 1488140000.

The previous prime is 2479988627. The next prime is 2479988653. The reversal of 2479988643 is 3468899742.

It is a cyclic number.

It is not a de Polignac number, because 2479988643 - 2⁴ = 2479988627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2479988653) 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, 368703 + ... + 375368.

It is an arithmetic number, because the mean of its divisors is an integer number (227686032).

Almost surely, 2^2479988643 is an apocalyptic number.

2479988643 is a deficient number, since it is larger than the sum of its proper divisors (1162987869).

2479988643 is a wasteful number, since it uses less digits than its factorization.

2479988643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744186.

The product of its digits is 20901888, while the sum is 60.

The square root of 2479988643 is about 49799.4843648004. The cubic root of 2479988643 is about 1353.5778242077.

The spelling of 2479988643 in words is "two billion, four hundred seventy-nine million, nine hundred eighty-eight thousand, six hundred forty-three".