12813882218 has 4 divisors (see below), whose sum is σ = 19220823330. Its totient is φ = 6406941108.

The previous prime is 12813882187. The next prime is 12813882227. The reversal of 12813882218 is 81228831821.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11448358009 + 1365524209 = 106997^2 + 36953^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203470553 + ... + 3203470556.

Almost surely, 2^12813882218 is an apocalyptic number.

12813882218 is a deficient number, since it is larger than the sum of its proper divisors (6406941112).

12813882218 is an equidigital number, since it uses as much as digits as its factorization.

12813882218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406941111.

The product of its digits is 98304, while the sum is 44.

The spelling of 12813882218 in words is "twelve billion, eight hundred thirteen million, eight hundred eighty-two thousand, two hundred eighteen".