13694181636 has 12 divisors (see below), whose sum is σ = 31953090512. Its totient is φ = 4564727208.

The previous prime is 13694181593. The next prime is 13694181647. The reversal of 13694181636 is 63618149631.

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

It is a super-2 number, since 2×13694181636² (a number of 21 digits) contains 22 as substring.

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, 570590890 + ... + 570590913.

Almost surely, 2^13694181636 is an apocalyptic number.

It is an amenable number.

13694181636 is an abundant number, since it is smaller than the sum of its proper divisors (18258908876).

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

13694181636 is a wasteful number, since it uses less digits than its factorization.

13694181636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141181810 (or 1141181808 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The spelling of 13694181636 in words is "thirteen billion, six hundred ninety-four million, one hundred eighty-one thousand, six hundred thirty-six".