13939218836 has 12 divisors (see below), whose sum is σ = 24417532020. Its totient is φ = 6962781120.

The previous prime is 13939218829. The next prime is 13939218857. The reversal of 13939218836 is 63881293931.

It can be written as a sum of positive squares in 2 ways, for example, as 6481860100 + 7457358736 = 80510^2 + 86356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702481 + ... + 1710648.

It is an arithmetic number, because the mean of its divisors is an integer number (2034794335).

Almost surely, 2^13939218836 is an apocalyptic number.

It is an amenable number.

13939218836 is a deficient number, since it is larger than the sum of its proper divisors (10478313184).

13939218836 is a wasteful number, since it uses less digits than its factorization.

13939218836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414154 (or 3414152 counting only the distinct ones).

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

It can be divided in two parts, 1393 and 9218836, that added together give a palindrome (9220229).

The spelling of 13939218836 in words is "thirteen billion, nine hundred thirty-nine million, two hundred eighteen thousand, eight hundred thirty-six".