18703468918 has 8 divisors (see below), whose sum is σ = 29705509512. Its totient is φ = 8801632416.

The previous prime is 18703468871. The next prime is 18703468981. The reversal of 18703468918 is 81986430781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275050980 + ... + 275051047.

It is an arithmetic number, because the mean of its divisors is an integer number (3713188689).

Almost surely, 2^18703468918 is an apocalyptic number.

18703468918 is a deficient number, since it is larger than the sum of its proper divisors (11002040594).

18703468918 is a wasteful number, since it uses less digits than its factorization.

18703468918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550102046.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 18703468918 in words is "eighteen billion, seven hundred three million, four hundred sixty-eight thousand, nine hundred eighteen".