8187227818 has 48 divisors (see below), whose sum is σ = 15598302624. Its totient is φ = 3187023840.

The previous prime is 8187227791. The next prime is 8187227891.

8187227818 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8187227818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1563721 + ... + 1568947.

It is an arithmetic number, because the mean of its divisors is an integer number (324964638).

Almost surely, 2^8187227818 is an apocalyptic number.

8187227818 is a deficient number, since it is larger than the sum of its proper divisors (7411074806).

8187227818 is a wasteful number, since it uses less digits than its factorization.

8187227818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707 (or 6700 counting only the distinct ones).

The product of its digits is 802816, while the sum is 52.

The square root of 8187227818 is about 90483.3013212935. The cubic root of 8187227818 is about 2015.4821602707.

The spelling of 8187227818 in words is "eight billion, one hundred eighty-seven million, two hundred twenty-seven thousand, eight hundred eighteen".