13118369818 has 8 divisors (see below), whose sum is σ = 19688914548. Its totient is φ = 6555398304.

The previous prime is 13118369813. The next prime is 13118369837. The reversal of 13118369818 is 81896381131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12898826329 + 219543489 = 113573^2 + 14817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13118369813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888971 + ... + 1895902.

Almost surely, 2^13118369818 is an apocalyptic number.

13118369818 is a deficient number, since it is larger than the sum of its proper divisors (6570544730).

13118369818 is a wasteful number, since it uses less digits than its factorization.

13118369818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786608.

The product of its digits is 248832, while the sum is 49.

The spelling of 13118369818 in words is "thirteen billion, one hundred eighteen million, three hundred sixty-nine thousand, eight hundred eighteen".