18672798474 has 48 divisors (see below), whose sum is σ = 44226561600. Its totient is φ = 5646775680.

The previous prime is 18672798457. The next prime is 18672798479. The reversal of 18672798474 is 47489727681.

18672798474 is a `hidden beast` number, since 1 + 8 + 6 + 72 + 7 + 98 + 474 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18672798479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399 + ... + 193250.

It is an arithmetic number, because the mean of its divisors is an integer number (921386700).

Almost surely, 2^18672798474 is an apocalyptic number.

18672798474 is an abundant number, since it is smaller than the sum of its proper divisors (25553763126).

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

18672798474 is a wasteful number, since it uses less digits than its factorization.

18672798474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194155 (or 194152 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 18672798474 in words is "eighteen billion, six hundred seventy-two million, seven hundred ninety-eight thousand, four hundred seventy-four".