13193980918 has 4 divisors (see below), whose sum is σ = 19790971380. Its totient is φ = 6596990458.

The previous prime is 13193980871. The next prime is 13193980927. The reversal of 13193980918 is 81908939131.

It is a happy number.

13193980918 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13193980918² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3298495228 + ... + 3298495231.

It is an arithmetic number, because the mean of its divisors is an integer number (4947742845).

Almost surely, 2^13193980918 is an apocalyptic number.

13193980918 is a deficient number, since it is larger than the sum of its proper divisors (6596990462).

13193980918 is an equidigital number, since it uses as much as digits as its factorization.

13193980918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6596990461.

The product of its (nonzero) digits is 419904, while the sum is 52.

The spelling of 13193980918 in words is "thirteen billion, one hundred ninety-three million, nine hundred eighty thousand, nine hundred eighteen".