8186226818 has 32 divisors (see below), whose sum is σ = 16209859968. Its totient is φ = 3001824000.

The previous prime is 8186226787. The next prime is 8186226821.

It is a happy number.

8186226818 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1560833 + ... + 1566068.

It is an arithmetic number, because the mean of its divisors is an integer number (506558124).

Almost surely, 2^8186226818 is an apocalyptic number.

8186226818 is a deficient number, since it is larger than the sum of its proper divisors (8023633150).

8186226818 is a wasteful number, since it uses less digits than its factorization.

8186226818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126938.

The product of its digits is 589824, while the sum is 50.

The square root of 8186226818 is about 90477.7697448384. The cubic root of 8186226818 is about 2015.4000168837.

The spelling of 8186226818 in words is "eight billion, one hundred eighty-six million, two hundred twenty-six thousand, eight hundred eighteen".