2218857984 has 360 divisors, whose sum is σ = 7713845568. Its totient is φ = 611573760.

The previous prime is 2218857937. The next prime is 2218858009. The reversal of 2218857984 is 4897588122.

Its product of digits (2580480) is a multiple of the sum of its prime divisors (360).

It is a self number, because there is not a number n which added to its sum of digits gives 2218857984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6999394 + ... + 6999710.

Almost surely, 2^2218857984 is an apocalyptic number.

2218857984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218857984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3856922784).

2218857984 is an abundant number, since it is smaller than the sum of its proper divisors (5494987584).

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

2218857984 is a wasteful number, since it uses less digits than its factorization.

2218857984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 360 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 2218857984 is about 47104.7554287250. The cubic root of 2218857984 is about 1304.2970204257.

The spelling of 2218857984 in words is "two billion, two hundred eighteen million, eight hundred fifty-seven thousand, nine hundred eighty-four".