8186116818 has 48 divisors (see below), whose sum is σ = 18039345408. Its totient is φ = 2474656800.

The previous prime is 8186116793. The next prime is 8186116831.

8186116818 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292255 + ... + 319037.

It is an arithmetic number, because the mean of its divisors is an integer number (375819696).

Almost surely, 2^8186116818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8186116818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9019672704).

8186116818 is an abundant number, since it is smaller than the sum of its proper divisors (9853228590).

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

8186116818 is a wasteful number, since it uses less digits than its factorization.

8186116818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27231 (or 27220 counting only the distinct ones).

The product of its digits is 147456, while the sum is 48.

The square root of 8186116818 is about 90477.1618586702. The cubic root of 8186116818 is about 2015.3909897295.

The spelling of 8186116818 in words is "eight billion, one hundred eighty-six million, one hundred sixteen thousand, eight hundred eighteen".