18573353839 has 2 divisors, whose sum is σ = 18573353840. Its totient is φ = 18573353838.

The previous prime is 18573353809. The next prime is 18573353881. The reversal of 18573353839 is 93835337581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18573353839 - 2²³ = 18564965231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18573353839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18573353809) 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 as a sum of consecutive naturals, namely, 9286676919 + 9286676920.

It is an arithmetic number, because the mean of its divisors is an integer number (9286676920).

Almost surely, 2^18573353839 is an apocalyptic number.

18573353839 is a deficient number, since it is larger than the sum of its proper divisors (1).

18573353839 is an equidigital number, since it uses as much as digits as its factorization.

18573353839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 55.

The spelling of 18573353839 in words is "eighteen billion, five hundred seventy-three million, three hundred fifty-three thousand, eight hundred thirty-nine".