18504830383 has 4 divisors (see below), whose sum is σ = 19928278888. Its totient is φ = 17081381880.

The previous prime is 18504830363. The next prime is 18504830401. The reversal of 18504830383 is 38303840581.

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-18504830383 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 (18504830363) 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, 711724233 + ... + 711724258.

It is an arithmetic number, because the mean of its divisors is an integer number (4982069722).

Almost surely, 2^18504830383 is an apocalyptic number.

18504830383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18504830383 is a deficient number, since it is larger than the sum of its proper divisors (1423448505).

18504830383 is a wasteful number, since it uses less digits than its factorization.

18504830383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423448504.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 18504830383 in words is "eighteen billion, five hundred four million, eight hundred thirty thousand, three hundred eighty-three".