13318618 has 8 divisors (see below), whose sum is σ = 20305620. Its totient is φ = 6550080.

The previous prime is 13318607. The next prime is 13318619. The reversal of 13318618 is 81681331.

It can be written as a sum of positive squares in 2 ways, for example, as 9566649 + 3751969 = 3093^2 + 1937^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13318618.

It is not an unprimeable number, because it can be changed into a prime (13318619) 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, 54463 + ... + 54706.

Almost surely, 2^13318618 is an apocalyptic number.

13318618 is a deficient number, since it is larger than the sum of its proper divisors (6987002).

13318618 is a wasteful number, since it uses less digits than its factorization.

13318618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109232.

The product of its digits is 3456, while the sum is 31.

The square root of 13318618 is about 3649.4681804340. The cubic root of 13318618 is about 237.0389534031.

Adding to 13318618 its reverse (81681331), we get a palindrome (94999949).

The spelling of 13318618 in words is "thirteen million, three hundred eighteen thousand, six hundred eighteen".