18694608870 has 96 divisors (see below), whose sum is σ = 53465450976. Its totient is φ = 4168819200.

The previous prime is 18694608851. The next prime is 18694608941. The reversal of 18694608870 is 7880649681.

It is a self number, because there is not a number n which added to its sum of digits gives 18694608870.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94821 + ... + 215360.

It is an arithmetic number, because the mean of its divisors is an integer number (556931781).

Almost surely, 2^18694608870 is an apocalyptic number.

18694608870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18694608870 is an abundant number, since it is smaller than the sum of its proper divisors (34770842106).

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

18694608870 is a wasteful number, since it uses less digits than its factorization.

18694608870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310246 (or 310239 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 18694608870 in words is "eighteen billion, six hundred ninety-four million, six hundred eight thousand, eight hundred seventy".