13704939638 has 16 divisors (see below), whose sum is σ = 22737094800. Its totient is φ = 6154400736.

The previous prime is 13704939631. The next prime is 13704939641. The reversal of 13704939638 is 83693940731.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13704939638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13704939631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7122188 + ... + 7124111.

It is an arithmetic number, because the mean of its divisors is an integer number (1421068425).

Almost surely, 2^13704939638 is an apocalyptic number.

13704939638 is a deficient number, since it is larger than the sum of its proper divisors (9032155162).

13704939638 is a wasteful number, since it uses less digits than its factorization.

13704939638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14246351.

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 13704939638 in words is "thirteen billion, seven hundred four million, nine hundred thirty-nine thousand, six hundred thirty-eight".