18966118318 has 8 divisors (see below), whose sum is σ = 32513345712. Its totient is φ = 8128336416.

The previous prime is 18966118271. The next prime is 18966118319. The reversal of 18966118318 is 81381166981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18966118319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677361355 + ... + 677361382.

It is an arithmetic number, because the mean of its divisors is an integer number (4064168214).

Almost surely, 2^18966118318 is an apocalyptic number.

18966118318 is a deficient number, since it is larger than the sum of its proper divisors (13547227394).

18966118318 is a wasteful number, since it uses less digits than its factorization.

18966118318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354722746.

The product of its digits is 497664, while the sum is 52.

The spelling of 18966118318 in words is "eighteen billion, nine hundred sixty-six million, one hundred eighteen thousand, three hundred eighteen".