18139343199 has 4 divisors (see below), whose sum is σ = 24185790936. Its totient is φ = 12092895464.

The previous prime is 18139343191. The next prime is 18139343207. The reversal of 18139343199 is 99134393181.

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

It is an interprime number because it is at equal distance from previous prime (18139343191) and next prime (18139343207).

It is a cyclic number.

It is not a de Polignac number, because 18139343199 - 2³ = 18139343191 is a prime.

It is a super-2 number, since 2×18139343199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18139343191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023223864 + ... + 3023223869.

It is an arithmetic number, because the mean of its divisors is an integer number (6046447734).

Almost surely, 2^18139343199 is an apocalyptic number.

18139343199 is a deficient number, since it is larger than the sum of its proper divisors (6046447737).

18139343199 is an equidigital number, since it uses as much as digits as its factorization.

18139343199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046447736.

The product of its digits is 629856, while the sum is 51.

The spelling of 18139343199 in words is "eighteen billion, one hundred thirty-nine million, three hundred forty-three thousand, one hundred ninety-nine".