18591544482 has 16 divisors (see below), whose sum is σ = 42494958912. Its totient is φ = 5311869840.

The previous prime is 18591544481. The next prime is 18591544507. The reversal of 18591544482 is 28444519581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18591544481) 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 7 ways as a sum of consecutive naturals, for example, 221327869 + ... + 221327952.

It is an arithmetic number, because the mean of its divisors is an integer number (2655934932).

Almost surely, 2^18591544482 is an apocalyptic number.

18591544482 is an abundant number, since it is smaller than the sum of its proper divisors (23903414430).

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

18591544482 is a wasteful number, since it uses less digits than its factorization.

18591544482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442655833.

The product of its digits is 1843200, while the sum is 51.

The spelling of 18591544482 in words is "eighteen billion, five hundred ninety-one million, five hundred forty-four thousand, four hundred eighty-two".