13818909799 has 16 divisors (see below), whose sum is σ = 15142122720. Its totient is φ = 12552744960.

The previous prime is 13818909737. The next prime is 13818909847. The reversal of 13818909799 is 99790981831.

It is a cyclic number.

It is not a de Polignac number, because 13818909799 - 2²³ = 13810521191 is a prime.

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 13818909799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13818909719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2221804 + ... + 2228014.

It is an arithmetic number, because the mean of its divisors is an integer number (946382670).

Almost surely, 2^13818909799 is an apocalyptic number.

13818909799 is a deficient number, since it is larger than the sum of its proper divisors (1323212921).

13818909799 is a wasteful number, since it uses less digits than its factorization.

13818909799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10770.

The product of its (nonzero) digits is 8817984, while the sum is 64.

The spelling of 13818909799 in words is "thirteen billion, eight hundred eighteen million, nine hundred nine thousand, seven hundred ninety-nine".