18126339839 has 2 divisors, whose sum is σ = 18126339840. Its totient is φ = 18126339838.

The previous prime is 18126339817. The next prime is 18126339919. The reversal of 18126339839 is 93893362181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18126339839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18126339139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9063169919 + 9063169920.

It is an arithmetic number, because the mean of its divisors is an integer number (9063169920).

Almost surely, 2^18126339839 is an apocalyptic number.

18126339839 is a deficient number, since it is larger than the sum of its proper divisors (1).

18126339839 is an equidigital number, since it uses as much as digits as its factorization.

18126339839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The spelling of 18126339839 in words is "eighteen billion, one hundred twenty-six million, three hundred thirty-nine thousand, eight hundred thirty-nine".