2641650638 has 32 divisors (see below), whose sum is σ = 4580735328. Its totient is φ = 1129190400.

The previous prime is 2641650593. The next prime is 2641650653. The reversal of 2641650638 is 8360561462.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2641650595 and 2641650604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649106 + ... + 653162.

It is an arithmetic number, because the mean of its divisors is an integer number (143147979).

Almost surely, 2^2641650638 is an apocalyptic number.

2641650638 is a deficient number, since it is larger than the sum of its proper divisors (1939084690).

2641650638 is a wasteful number, since it uses less digits than its factorization.

2641650638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 2641650638 is about 51396.9905539225. The cubic root of 2641650638 is about 1382.3726316262.

The spelling of 2641650638 in words is "two billion, six hundred forty-one million, six hundred fifty thousand, six hundred thirty-eight".