18923214318 has 16 divisors (see below), whose sum is σ = 40072689360. Its totient is φ = 5936694656.

The previous prime is 18923214313. The next prime is 18923214319. The reversal of 18923214318 is 81341232981.

It is a self number, because there is not a number n which added to its sum of digits gives 18923214318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18923214311) 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, 92760753 + ... + 92760956.

It is an arithmetic number, because the mean of its divisors is an integer number (2504543085).

Almost surely, 2^18923214318 is an apocalyptic number.

18923214318 is an abundant number, since it is smaller than the sum of its proper divisors (21149475042).

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

18923214318 is a wasteful number, since it uses less digits than its factorization.

18923214318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185521731.

The product of its digits is 82944, while the sum is 42.

The spelling of 18923214318 in words is "eighteen billion, nine hundred twenty-three million, two hundred fourteen thousand, three hundred eighteen".