18529204544 has 28 divisors (see below), whose sum is σ = 37762648884. Its totient is φ = 9014206464.

The previous prime is 18529204541. The next prime is 18529204751. The reversal of 18529204544 is 44540292581.

It can be written as a sum of positive squares in 2 ways, for example, as 13856114944 + 4673089600 = 117712^2 + 68360^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18529204495 and 18529204504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18529204541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910049 + ... + 3914784.

Almost surely, 2^18529204544 is an apocalyptic number.

It is an amenable number.

18529204544 is an abundant number, since it is smaller than the sum of its proper divisors (19233444340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18529204544 is an equidigital number, since it uses as much as digits as its factorization.

18529204544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824882 (or 7824872 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 18529204544 in words is "eighteen billion, five hundred twenty-nine million, two hundred four thousand, five hundred forty-four".