8018591522 has 18 divisors (see below), whose sum is σ = 12578144817. Its totient is φ = 3833585536.

The previous prime is 8018591521. The next prime is 8018591563. The reversal of 8018591522 is 2251958108.

It can be written as a sum of positive squares in 2 ways, for example, as 6054240481 + 1964351041 = 77809^2 + 44321^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63319.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8018591522.

It is not an unprimeable number, because it can be changed into a prime (8018591521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2911298 + ... + 2914050.

Almost surely, 2^8018591522 is an apocalyptic number.

8018591522 is a deficient number, since it is larger than the sum of its proper divisors (4559553295).

8018591522 is an frugal number, since it uses more digits than its factorization.

8018591522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 8018591522 is about 89546.5885559020. The cubic root of 8018591522 is about 2001.5480948919.

The spelling of 8018591522 in words is "eight billion, eighteen million, five hundred ninety-one thousand, five hundred twenty-two".