2638232879 has 4 divisors (see below), whose sum is σ = 2699587176. Its totient is φ = 2576878584.

The previous prime is 2638232827. The next prime is 2638232881. The reversal of 2638232879 is 9782328362.

2638232879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638232879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638232819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30677084 + ... + 30677169.

It is an arithmetic number, because the mean of its divisors is an integer number (674896794).

Almost surely, 2^2638232879 is an apocalyptic number.

2638232879 is a deficient number, since it is larger than the sum of its proper divisors (61354297).

2638232879 is an equidigital number, since it uses as much as digits as its factorization.

2638232879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61354296.

The product of its digits is 1741824, while the sum is 50.

The square root of 2638232879 is about 51363.7311631466. The cubic root of 2638232879 is about 1381.7762045962.

The spelling of 2638232879 in words is "two billion, six hundred thirty-eight million, two hundred thirty-two thousand, eight hundred seventy-nine".