2638326630 has 64 divisors (see below), whose sum is σ = 6577998336. Its totient is φ = 676704000.

The previous prime is 2638326629. The next prime is 2638326661. The reversal of 2638326630 is 366238362.

2638326630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72225 + ... + 102435.

It is an arithmetic number, because the mean of its divisors is an integer number (102781224).

Almost surely, 2^2638326630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2638326630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3288999168).

2638326630 is an abundant number, since it is smaller than the sum of its proper divisors (3939671706).

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

2638326630 is a wasteful number, since it uses less digits than its factorization.

2638326630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30333.

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 2638326630 is about 51364.6437737088. The cubic root of 2638326630 is about 1381.7925717849.

The spelling of 2638326630 in words is "two billion, six hundred thirty-eight million, three hundred twenty-six thousand, six hundred thirty".