13885820839 has 4 divisors (see below), whose sum is σ = 15148168200. Its totient is φ = 12623473480.

The previous prime is 13885820833. The next prime is 13885820857. The reversal of 13885820839 is 93802858831.

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

It is a cyclic number.

It is not a de Polignac number, because 13885820839 - 2³ = 13885820831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13885820839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13885820831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631173664 + ... + 631173685.

It is an arithmetic number, because the mean of its divisors is an integer number (3787042050).

Almost surely, 2^13885820839 is an apocalyptic number.

13885820839 is a deficient number, since it is larger than the sum of its proper divisors (1262347361).

13885820839 is a wasteful number, since it uses less digits than its factorization.

13885820839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262347360.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 13885820839 in words is "thirteen billion, eight hundred eighty-five million, eight hundred twenty thousand, eight hundred thirty-nine".