8181160218 has 160 divisors (see below), whose sum is σ = 22957862400. Its totient is φ = 2124189360.

The previous prime is 8181160171. The next prime is 8181160259. The reversal of 8181160218 is 8120611818.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3029833 + ... + 3032531.

It is an arithmetic number, because the mean of its divisors is an integer number (143486640).

Almost surely, 2^8181160218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8181160218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11478931200).

8181160218 is an abundant number, since it is smaller than the sum of its proper divisors (14776702182).

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

8181160218 is an equidigital number, since it uses as much as digits as its factorization.

8181160218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 36.

The square root of 8181160218 is about 90449.7662683547. The cubic root of 8181160218 is about 2014.9841422154.

The spelling of 8181160218 in words is "eight billion, one hundred eighty-one million, one hundred sixty thousand, two hundred eighteen".