18468183665 has 16 divisors (see below), whose sum is σ = 23563664640. Its totient is φ = 13847258880.

The previous prime is 18468183659. The next prime is 18468183667. The reversal of 18468183665 is 56638186481.

It is not a de Polignac number, because 18468183665 - 2¹⁰ = 18468182641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18468183665.

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, 434231 + ... + 474860.

It is an arithmetic number, because the mean of its divisors is an integer number (1472729040).

Almost surely, 2^18468183665 is an apocalyptic number.

It is an amenable number.

18468183665 is a deficient number, since it is larger than the sum of its proper divisors (5095480975).

18468183665 is a wasteful number, since it uses less digits than its factorization.

18468183665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909352.

The product of its digits is 6635520, while the sum is 56.

The spelling of 18468183665 in words is "eighteen billion, four hundred sixty-eight million, one hundred eighty-three thousand, six hundred sixty-five".