13868320986 has 32 divisors (see below), whose sum is σ = 33189145920. Its totient is φ = 4267175472.

The previous prime is 13868320981. The next prime is 13868320987. The reversal of 13868320986 is 68902386831.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13868320981) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9877020 + ... + 9878423.

It is an arithmetic number, because the mean of its divisors is an integer number (1037160810).

Almost surely, 2^13868320986 is an apocalyptic number.

13868320986 is an abundant number, since it is smaller than the sum of its proper divisors (19320824934).

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

13868320986 is a wasteful number, since it uses less digits than its factorization.

13868320986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755467 (or 19755461 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 13868320986 in words is "thirteen billion, eight hundred sixty-eight million, three hundred twenty thousand, nine hundred eighty-six".