13193487156 has 12 divisors (see below), whose sum is σ = 30784803392. Its totient is φ = 4397829048.

The previous prime is 13193487133. The next prime is 13193487187. The reversal of 13193487156 is 65178439131.

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

It is a congruent number.

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, 549728620 + ... + 549728643.

Almost surely, 2^13193487156 is an apocalyptic number.

It is an amenable number.

13193487156 is an abundant number, since it is smaller than the sum of its proper divisors (17591316236).

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

13193487156 is a wasteful number, since it uses less digits than its factorization.

13193487156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099457270 (or 1099457268 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The spelling of 13193487156 in words is "thirteen billion, one hundred ninety-three million, four hundred eighty-seven thousand, one hundred fifty-six".