2638232621 has 16 divisors (see below), whose sum is σ = 2733244800. Its totient is φ = 2544913728.

The previous prime is 2638232603. The next prime is 2638232647. The reversal of 2638232621 is 1262328362.

It is a cyclic number.

It is not a de Polignac number, because 2638232621 - 2⁶ = 2638232557 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 (2638232021) 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, 1822520 + ... + 1823966.

It is an arithmetic number, because the mean of its divisors is an integer number (170827800).

Almost surely, 2^2638232621 is an apocalyptic number.

It is an amenable number.

2638232621 is a deficient number, since it is larger than the sum of its proper divisors (95012179).

2638232621 is a wasteful number, since it uses less digits than its factorization.

2638232621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its digits is 41472, while the sum is 35.

The square root of 2638232621 is about 51363.7286516468. The cubic root of 2638232621 is about 1381.7761595536.

The spelling of 2638232621 in words is "two billion, six hundred thirty-eight million, two hundred thirty-two thousand, six hundred twenty-one".