18468183666 has 16 divisors (see below), whose sum is σ = 37722248064. Its totient is φ = 6025081104.

The previous prime is 18468183659. The next prime is 18468183667. The reversal of 18468183666 is 66638186481.

It is a super-2 number, since 2×18468183666² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 32744725 + ... + 32745288.

It is an arithmetic number, because the mean of its divisors is an integer number (2357640504).

Almost surely, 2^18468183666 is an apocalyptic number.

18468183666 is an abundant number, since it is smaller than the sum of its proper divisors (19254064398).

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

18468183666 is a wasteful number, since it uses less digits than its factorization.

18468183666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65490065.

The product of its digits is 7962624, while the sum is 57.

The spelling of 18468183666 in words is "eighteen billion, four hundred sixty-eight million, one hundred eighty-three thousand, six hundred sixty-six".