13886381808 has 240 divisors, whose sum is σ = 43567524000. Its totient is φ = 4099479552.

The previous prime is 13886381801. The next prime is 13886381843. The reversal of 13886381808 is 80818368831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13886381801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9716838 + ... + 9718266.

It is an arithmetic number, because the mean of its divisors is an integer number (181531350).

Almost surely, 2^13886381808 is an apocalyptic number.

13886381808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13886381808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21783762000).

13886381808 is an abundant number, since it is smaller than the sum of its proper divisors (29681142192).

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

13886381808 is a wasteful number, since it uses less digits than its factorization.

13886381808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The spelling of 13886381808 in words is "thirteen billion, eight hundred eighty-six million, three hundred eighty-one thousand, eight hundred eight".