13116618 has 12 divisors (see below), whose sum is σ = 28419378. Its totient is φ = 4372200.

The previous prime is 13116589. The next prime is 13116641. The reversal of 13116618 is 81661131.

13116618 is a `hidden beast` number, since 1 + 31 + 16 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12723489 + 393129 = 3567^2 + 627^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13116591 and 13116600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364333 + ... + 364368.

Almost surely, 2^13116618 is an apocalyptic number.

13116618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13116618 is an abundant number, since it is smaller than the sum of its proper divisors (15302760).

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

13116618 is a wasteful number, since it uses less digits than its factorization.

13116618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728709 (or 728706 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 13116618 is about 3621.6871758892. The cubic root of 13116618 is about 235.8344740865.

Adding to 13116618 its reverse (81661131), we get a palindrome (94777749).

The spelling of 13116618 in words is "thirteen million, one hundred sixteen thousand, six hundred eighteen".