18214909659 has 12 divisors (see below), whose sum is σ = 26325629616. Its totient is φ = 12136255632.

The previous prime is 18214909621. The next prime is 18214909663. The reversal of 18214909659 is 95690941281.

18214909659 is a `hidden beast` number, since 18 + 2 + 1 + 490 + 96 + 59 = 666.

It is not a de Polignac number, because 18214909659 - 2¹¹ = 18214907611 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18214909859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568327 + ... + 599520.

It is an arithmetic number, because the mean of its divisors is an integer number (2193802468).

Almost surely, 2^18214909659 is an apocalyptic number.

18214909659 is a deficient number, since it is larger than the sum of its proper divisors (8110719957).

18214909659 is a wasteful number, since it uses less digits than its factorization.

18214909659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169586 (or 1169583 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 18214909659 in words is "eighteen billion, two hundred fourteen million, nine hundred nine thousand, six hundred fifty-nine".