18321304383 has 10 divisors (see below), whose sum is σ = 27368862224. Its totient is φ = 12214202868.

The previous prime is 18321304343. The next prime is 18321304387. The reversal of 18321304383 is 38340312381.

18321304383 is a `hidden beast` number, since 1 + 8 + 3 + 213 + 0 + 438 + 3 = 666.

It is not a de Polignac number, because 18321304383 - 2²⁸ = 18052868927 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 (18321304387) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 113094391 + ... + 113094552.

Almost surely, 2^18321304383 is an apocalyptic number.

18321304383 is a deficient number, since it is larger than the sum of its proper divisors (9047557841).

18321304383 is an equidigital number, since it uses as much as digits as its factorization.

18321304383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226188955 (or 226188946 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 18321304383 in words is "eighteen billion, three hundred twenty-one million, three hundred four thousand, three hundred eighty-three".