7326631581 has 16 divisors (see below), whose sum is σ = 9795448320. Its totient is φ = 4871139120.

The previous prime is 7326631561. The next prime is 7326631597. The reversal of 7326631581 is 1851366237.

It is not a de Polignac number, because 7326631581 - 2⁵ = 7326631549 is a prime.

It is a super-2 number, since 2×7326631581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7326631561) 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, 2000530 + ... + 2004188.

It is an arithmetic number, because the mean of its divisors is an integer number (612215520).

Almost surely, 2^7326631581 is an apocalyptic number.

It is an amenable number.

7326631581 is a deficient number, since it is larger than the sum of its proper divisors (2468816739).

7326631581 is a wasteful number, since it uses less digits than its factorization.

7326631581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296.

The product of its digits is 181440, while the sum is 42.

The square root of 7326631581 is about 85595.7451103733. The cubic root of 7326631581 is about 1942.2335472623.

The spelling of 7326631581 in words is "seven billion, three hundred twenty-six million, six hundred thirty-one thousand, five hundred eighty-one".