18420475074 has 16 divisors (see below), whose sum is σ = 36872159040. Its totient is φ = 6134956880.

The previous prime is 18420475067. The next prime is 18420475079. The reversal of 18420475074 is 47057402481.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18420475079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292694 + ... + 1306865.

It is an arithmetic number, because the mean of its divisors is an integer number (2304509940).

Almost surely, 2^18420475074 is an apocalyptic number.

18420475074 is an abundant number, since it is smaller than the sum of its proper divisors (18451683966).

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

18420475074 is a wasteful number, since it uses less digits than its factorization.

18420475074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600745.

The product of its (nonzero) digits is 250880, while the sum is 42.

The spelling of 18420475074 in words is "eighteen billion, four hundred twenty million, four hundred seventy-five thousand, seventy-four".