18468183664 has 80 divisors (see below), whose sum is σ = 41934816000. Its totient is φ = 7713861120.

The previous prime is 18468183659. The next prime is 18468183667. The reversal of 18468183664 is 46638186481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18468183667) 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, 6882067 + ... + 6884749.

It is an arithmetic number, because the mean of its divisors is an integer number (524185200).

Almost surely, 2^18468183664 is an apocalyptic number.

18468183664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18468183664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20967408000).

18468183664 is an abundant number, since it is smaller than the sum of its proper divisors (23466632336).

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

18468183664 is a wasteful number, since it uses less digits than its factorization.

18468183664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238 (or 4232 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 55.

The spelling of 18468183664 in words is "eighteen billion, four hundred sixty-eight million, one hundred eighty-three thousand, six hundred sixty-four".