13161218 has 8 divisors (see below), whose sum is σ = 22562112. Its totient is φ = 5640516.

The previous prime is 13161193. The next prime is 13161229. The reversal of 13161218 is 81216131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13161193 and 13161202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470030 + ... + 470057.

It is an arithmetic number, because the mean of its divisors is an integer number (2820264).

Almost surely, 2^13161218 is an apocalyptic number.

13161218 is a deficient number, since it is larger than the sum of its proper divisors (9400894).

13161218 is an equidigital number, since it uses as much as digits as its factorization.

13161218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940096.

The product of its digits is 288, while the sum is 23.

The square root of 13161218 is about 3627.8393018435. The cubic root of 13161218 is about 236.1014717336.

Adding to 13161218 its reverse (81216131), we get a palindrome (94377349).

The spelling of 13161218 in words is "thirteen million, one hundred sixty-one thousand, two hundred eighteen".