13538794988 has 18 divisors (see below), whose sum is σ = 23962150716. Its totient is φ = 6693321184.

The previous prime is 13538794987. The next prime is 13538794993. The reversal of 13538794988 is 88949783531.

It is not an unprimeable number, because it can be changed into a prime (13538794987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181970 + ... + 245337.

Almost surely, 2^13538794988 is an apocalyptic number.

It is an amenable number.

13538794988 is a deficient number, since it is larger than the sum of its proper divisors (10423355728).

13538794988 is an equidigital number, since it uses as much as digits as its factorization.

13538794988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427489 (or 427398 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 65.

The spelling of 13538794988 in words is "thirteen billion, five hundred thirty-eight million, seven hundred ninety-four thousand, nine hundred eighty-eight".