2218366866 has 16 divisors (see below), whose sum is σ = 4437259488. Its totient is φ = 739368000.

The previous prime is 2218366849. The next prime is 2218366877. The reversal of 2218366866 is 6686638122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52266 + ... + 84666.

It is an arithmetic number, because the mean of its divisors is an integer number (277328718).

Almost surely, 2^2218366866 is an apocalyptic number.

2218366866 is an abundant number, since it is smaller than the sum of its proper divisors (2218892622).

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

2218366866 is a wasteful number, since it uses less digits than its factorization.

2218366866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43817.

The product of its digits is 995328, while the sum is 48.

The square root of 2218366866 is about 47099.5420996850. The cubic root of 2218366866 is about 1304.2007830798.

The spelling of 2218366866 in words is "two billion, two hundred eighteen million, three hundred sixty-six thousand, eight hundred sixty-six".