2218901886 has 24 divisors (see below), whose sum is σ = 4814605224. Its totient is φ = 738559440.

The previous prime is 2218901879. The next prime is 2218901899. The reversal of 2218901886 is 6881098122.

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 11 ways as a sum of consecutive naturals, for example, 76761 + ... + 101636.

It is an arithmetic number, because the mean of its divisors is an integer number (200608551).

Almost surely, 2^2218901886 is an apocalyptic number.

2218901886 is an abundant number, since it is smaller than the sum of its proper divisors (2595703338).

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

2218901886 is a wasteful number, since it uses less digits than its factorization.

2218901886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179096 (or 179093 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 2218901886 is about 47105.2214303255. The cubic root of 2218901886 is about 1304.3056225791.

The spelling of 2218901886 in words is "two billion, two hundred eighteen million, nine hundred one thousand, eight hundred eighty-six".