7381634645 has 54 divisors (see below), whose sum is σ = 11348802486. Its totient is φ = 4592316960.

The previous prime is 7381634621. The next prime is 7381634681. The reversal of 7381634645 is 5464361837.

It can be written as a sum of positive squares in only one way, i.e., 5905307716 + 1476326929 = 76846^2 + 38423^2 .

It is not a de Polignac number, because 7381634645 - 2⁶ = 7381634581 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7381634645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 14792606 + ... + 14793104.

It is an arithmetic number, because the mean of its divisors is an integer number (210163009).

Almost surely, 2^7381634645 is an apocalyptic number.

It is an amenable number.

7381634645 is a deficient number, since it is larger than the sum of its proper divisors (3967167841).

7381634645 is an equidigital number, since it uses as much as digits as its factorization.

7381634645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 522 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The square root of 7381634645 is about 85916.4398994744. The cubic root of 7381634645 is about 1947.0817312770.

The spelling of 7381634645 in words is "seven billion, three hundred eighty-one million, six hundred thirty-four thousand, six hundred forty-five".