18446027868 has 36 divisors (see below), whose sum is σ = 49081537960. Its totient is φ = 5825061216.

The previous prime is 18446027861. The next prime is 18446027869. The reversal of 18446027868 is 86872064481.

18446027868 is a `hidden beast` number, since 1 + 84 + 460 + 27 + 86 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18446027861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13483255 + ... + 13484622.

Almost surely, 2^18446027868 is an apocalyptic number.

18446027868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18446027868 is an abundant number, since it is smaller than the sum of its proper divisors (30635510092).

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

18446027868 is a wasteful number, since it uses less digits than its factorization.

18446027868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26967906 (or 26967901 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 18446027868 in words is "eighteen billion, four hundred forty-six million, twenty-seven thousand, eight hundred sixty-eight".