2638763875 has 32 divisors (see below), whose sum is σ = 3628317888. Its totient is φ = 1900000000.

The previous prime is 2638763863. The next prime is 2638763879. The reversal of 2638763875 is 5783678362.

2638763875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2638763875 - 2²⁵ = 2605209443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2638763879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129375 + ... + 148375.

It is an arithmetic number, because the mean of its divisors is an integer number (113384934).

Almost surely, 2^2638763875 is an apocalyptic number.

2638763875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2638763875 is a deficient number, since it is larger than the sum of its proper divisors (989554013).

2638763875 is a wasteful number, since it uses less digits than its factorization.

2638763875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19128 (or 19118 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 55.

The square root of 2638763875 is about 51368.8998811538. The cubic root of 2638763875 is about 1381.8689015454.

The spelling of 2638763875 in words is "two billion, six hundred thirty-eight million, seven hundred sixty-three thousand, eight hundred seventy-five".