18454023186 has 32 divisors (see below), whose sum is σ = 37820217600. Its totient is φ = 6000905040.

The previous prime is 18454023169. The next prime is 18454023187. The reversal of 18454023186 is 68132045481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18454023187) 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, 152596 + ... + 245343.

It is an arithmetic number, because the mean of its divisors is an integer number (1181881800).

Almost surely, 2^18454023186 is an apocalyptic number.

18454023186 is an abundant number, since it is smaller than the sum of its proper divisors (19366194414).

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

18454023186 is a wasteful number, since it uses less digits than its factorization.

18454023186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398134.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 18454023186 in words is "eighteen billion, four hundred fifty-four million, twenty-three thousand, one hundred eighty-six".