2634651645 has 16 divisors (see below), whose sum is σ = 4216208640. Its totient is φ = 1404892224.

The previous prime is 2634651631. The next prime is 2634651647. The reversal of 2634651645 is 5461564362.

It is not a de Polignac number, because 2634651645 - 2⁸ = 2634651389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2634651597 and 2634651606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2634651647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93612 + ... + 118458.

It is an arithmetic number, because the mean of its divisors is an integer number (263513040).

Almost surely, 2^2634651645 is an apocalyptic number.

It is an amenable number.

2634651645 is a deficient number, since it is larger than the sum of its proper divisors (1581556995).

2634651645 is a wasteful number, since it uses less digits than its factorization.

2634651645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31924.

The product of its digits is 518400, while the sum is 42.

The square root of 2634651645 is about 51328.8578189696. The cubic root of 2634651645 is about 1381.1506969279.

The spelling of 2634651645 in words is "two billion, six hundred thirty-four million, six hundred fifty-one thousand, six hundred forty-five".