18701870004 has 36 divisors (see below), whose sum is σ = 49025069184. Its totient is φ = 6233956344.

The previous prime is 18701869957. The next prime is 18701870023. The reversal of 18701870004 is 40007810781.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9619332 + ... + 9621275.

Almost surely, 2^18701870004 is an apocalyptic number.

It is an amenable number.

18701870004 is an abundant number, since it is smaller than the sum of its proper divisors (30323199180).

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

18701870004 is a wasteful number, since it uses less digits than its factorization.

18701870004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240626 (or 19240612 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The spelling of 18701870004 in words is "eighteen billion, seven hundred one million, eight hundred seventy thousand, four".