13718386538 has 32 divisors (see below), whose sum is σ = 22543557120. Its totient is φ = 6232826880.

The previous prime is 13718386537. The next prime is 13718386541. The reversal of 13718386538 is 83568381731.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13718386538.

It is not an unprimeable number, because it can be changed into a prime (13718386537) 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, 441353 + ... + 471411.

It is an arithmetic number, because the mean of its divisors is an integer number (704486160).

Almost surely, 2^13718386538 is an apocalyptic number.

13718386538 is a deficient number, since it is larger than the sum of its proper divisors (8825170582).

13718386538 is a wasteful number, since it uses less digits than its factorization.

13718386538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30542.

The product of its digits is 2903040, while the sum is 53.

The spelling of 13718386538 in words is "thirteen billion, seven hundred eighteen million, three hundred eighty-six thousand, five hundred thirty-eight".