2216881686 has 32 divisors (see below), whose sum is σ = 4478224608. Its totient is φ = 731566080.

The previous prime is 2216881679. The next prime is 2216881717. The reversal of 2216881686 is 6861886122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878106 + ... + 880626.

It is an arithmetic number, because the mean of its divisors is an integer number (139944519).

Almost surely, 2^2216881686 is an apocalyptic number.

2216881686 is an abundant number, since it is smaller than the sum of its proper divisors (2261342922).

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

2216881686 is a wasteful number, since it uses less digits than its factorization.

2216881686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936.

The product of its digits is 442368, while the sum is 48.

The square root of 2216881686 is about 47083.7730646132. The cubic root of 2216881686 is about 1303.9096672184.

The spelling of 2216881686 in words is "two billion, two hundred sixteen million, eight hundred eighty-one thousand, six hundred eighty-six".