18363838183 has 4 divisors (see below), whose sum is σ = 18364201128. Its totient is φ = 18363475240.

The previous prime is 18363838169. The next prime is 18363838193. The reversal of 18363838183 is 38183836381.

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

It is a cyclic number.

It is not a de Polignac number, because 18363838183 - 2²¹ = 18361741031 is a prime.

It is a super-2 number, since 2×18363838183² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18363838183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18363838133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90313 + ... + 211858.

It is an arithmetic number, because the mean of its divisors is an integer number (4591050282).

Almost surely, 2^18363838183 is an apocalyptic number.

18363838183 is a deficient number, since it is larger than the sum of its proper divisors (362945).

18363838183 is an equidigital number, since it uses as much as digits as its factorization.

18363838183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362944.

The product of its digits is 1990656, while the sum is 52.

The spelling of 18363838183 in words is "eighteen billion, three hundred sixty-three million, eight hundred thirty-eight thousand, one hundred eighty-three".