13818909719 has 2 divisors, whose sum is σ = 13818909720. Its totient is φ = 13818909718.

The previous prime is 13818909707. The next prime is 13818909737. The reversal of 13818909719 is 91790981831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13818909719 - 2²⁰ = 13817861143 is a prime.

It is a super-3 number, since 3×13818909719³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (13818909619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6909454859 + 6909454860.

It is an arithmetic number, because the mean of its divisors is an integer number (6909454860).

Almost surely, 2^13818909719 is an apocalyptic number.

13818909719 is a deficient number, since it is larger than the sum of its proper divisors (1).

13818909719 is an equidigital number, since it uses as much as digits as its factorization.

13818909719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 56.

The spelling of 13818909719 in words is "thirteen billion, eight hundred eighteen million, nine hundred nine thousand, seven hundred nineteen".