13993019536 has 20 divisors (see below), whose sum is σ = 27119153152. Its totient is φ = 6994528416.

The previous prime is 13993019531. The next prime is 13993019539. The reversal of 13993019536 is 63591039931.

It is a self number, because there is not a number n which added to its sum of digits gives 13993019536.

It is not an unprimeable number, because it can be changed into a prime (13993019531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64716 + ... + 179371.

Almost surely, 2^13993019536 is an apocalyptic number.

13993019536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13993019536 is a deficient number, since it is larger than the sum of its proper divisors (13126133616).

13993019536 is a wasteful number, since it uses less digits than its factorization.

13993019536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247678 (or 247672 counting only the distinct ones).

The product of its (nonzero) digits is 590490, while the sum is 49.

The spelling of 13993019536 in words is "thirteen billion, nine hundred ninety-three million, nineteen thousand, five hundred thirty-six".