13993581828 has 12 divisors (see below), whose sum is σ = 32651690960. Its totient is φ = 4664527272.

The previous prime is 13993581817. The next prime is 13993581839. The reversal of 13993581828 is 82818539931.

It is an interprime number because it is at equal distance from previous prime (13993581817) and next prime (13993581839).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583065898 + ... + 583065921.

Almost surely, 2^13993581828 is an apocalyptic number.

It is an amenable number.

13993581828 is an abundant number, since it is smaller than the sum of its proper divisors (18658109132).

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

13993581828 is a wasteful number, since it uses less digits than its factorization.

13993581828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166131826 (or 1166131824 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The spelling of 13993581828 in words is "thirteen billion, nine hundred ninety-three million, five hundred eighty-one thousand, eight hundred twenty-eight".