2218843692 has 144 divisors (see below), whose sum is σ = 6337487520. Its totient is φ = 674707968.

The previous prime is 2218843667. The next prime is 2218843729. The reversal of 2218843692 is 2963488122.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1123618 + ... + 1125590.

It is an arithmetic number, because the mean of its divisors is an integer number (44010330).

Almost surely, 2^2218843692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218843692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3168743760).

2218843692 is an abundant number, since it is smaller than the sum of its proper divisors (4118643828).

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

2218843692 is a wasteful number, since it uses less digits than its factorization.

2218843692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094 (or 2080 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 2218843692 is about 47104.6037240523. The cubic root of 2218843692 is about 1304.2942200282.

The spelling of 2218843692 in words is "two billion, two hundred eighteen million, eight hundred forty-three thousand, six hundred ninety-two".