18324359999 has 4 divisors (see below), whose sum is σ = 19990210920. Its totient is φ = 16658509080.

The previous prime is 18324359951. The next prime is 18324360013. The reversal of 18324359999 is 99995342381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18324359999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18324359699) 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, 832925444 + ... + 832925465.

It is an arithmetic number, because the mean of its divisors is an integer number (4997552730).

Almost surely, 2^18324359999 is an apocalyptic number.

18324359999 is a deficient number, since it is larger than the sum of its proper divisors (1665850921).

18324359999 is a wasteful number, since it uses less digits than its factorization.

18324359999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665850920.

The product of its digits is 18895680, while the sum is 62.

The spelling of 18324359999 in words is "eighteen billion, three hundred twenty-four million, three hundred fifty-nine thousand, nine hundred ninety-nine".