18042974073018 has 12 divisors (see below), whose sum is σ = 39093110491578. Its totient is φ = 6014324691000.

The previous prime is 18042974072971. The next prime is 18042974073079. The reversal of 18042974073018 is 81037047924081.

18042974073018 is a `hidden beast` number, since 1 + 8 + 0 + 4 + 297 + 40 + 7 + 301 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17719444045809 + 323530027209 = 4209447^2 + 568797^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501193724233 + ... + 501193724268.

Almost surely, 2^{18042974073018} is an apocalyptic number.

18042974073018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18042974073018 is an abundant number, since it is smaller than the sum of its proper divisors (21050136418560).

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

18042974073018 is a wasteful number, since it uses less digits than its factorization.

18042974073018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002387448509 (or 1002387448506 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 18042974073018 in words is "eighteen trillion, forty-two billion, nine hundred seventy-four million, seventy-three thousand, eighteen".