18017472942 has 48 divisors (see below), whose sum is σ = 44622670560. Its totient is φ = 5146929216.

The previous prime is 18017472911. The next prime is 18017473031. The reversal of 18017472942 is 24927471081.

18017472942 is a `hidden beast` number, since 1 + 80 + 17 + 472 + 94 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1033248 + ... + 1050540.

It is an arithmetic number, because the mean of its divisors is an integer number (929638970).

Almost surely, 2^18017472942 is an apocalyptic number.

18017472942 is an abundant number, since it is smaller than the sum of its proper divisors (26605197618).

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

18017472942 is a wasteful number, since it uses less digits than its factorization.

18017472942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25577 (or 25574 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

It can be divided in two parts, 180174 and 72942, that added together give a triangular number (253116 = T₇₁₁).

The spelling of 18017472942 in words is "eighteen billion, seventeen million, four hundred seventy-two thousand, nine hundred forty-two".