18204869874 has 32 divisors (see below), whose sum is σ = 38334617280. Its totient is φ = 5747620032.

The previous prime is 18204869873. The next prime is 18204869927. The reversal of 18204869874 is 47896840281.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (18204869873) 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, 581772 + ... + 612264.

It is an arithmetic number, because the mean of its divisors is an integer number (1197956790).

Almost surely, 2^18204869874 is an apocalyptic number.

18204869874 is an abundant number, since it is smaller than the sum of its proper divisors (20129747406).

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

18204869874 is a wasteful number, since it uses less digits than its factorization.

18204869874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35754.

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 18204869874 in words is "eighteen billion, two hundred four million, eight hundred sixty-nine thousand, eight hundred seventy-four".