2218383820 has 24 divisors (see below), whose sum is σ = 4675935600. Its totient is φ = 884052672.

The previous prime is 2218383809. The next prime is 2218383851. The reversal of 2218383820 is 283838122.

It is a self number, because there is not a number n which added to its sum of digits gives 2218383820.

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, 200790 + ... + 211549.

It is an arithmetic number, because the mean of its divisors is an integer number (194830650).

Almost surely, 2^2218383820 is an apocalyptic number.

2218383820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218383820 is an abundant number, since it is smaller than the sum of its proper divisors (2457551780).

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

2218383820 is a wasteful number, since it uses less digits than its factorization.

2218383820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412617 (or 412615 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 2218383820 is about 47099.7220798595. The cubic root of 2218383820 is about 1304.2041055485.

The spelling of 2218383820 in words is "two billion, two hundred eighteen million, three hundred eighty-three thousand, eight hundred twenty".