13688281908 has 72 divisors (see below), whose sum is σ = 41282136000. Its totient is φ = 3910936176.

The previous prime is 13688281883. The next prime is 13688281987. The reversal of 13688281908 is 80918288631.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1288008 + ... + 1298591.

It is an arithmetic number, because the mean of its divisors is an integer number (573363000).

Almost surely, 2^13688281908 is an apocalyptic number.

13688281908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13688281908 is an abundant number, since it is smaller than the sum of its proper divisors (27593854092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13688281908 is a wasteful number, since it uses less digits than its factorization.

13688281908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586626 (or 2586611 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 13688281908 in words is "thirteen billion, six hundred eighty-eight million, two hundred eighty-one thousand, nine hundred eight".