2218503840 has 576 divisors, whose sum is σ = 8848465920. Its totient is φ = 457021440.

The previous prime is 2218503827. The next prime is 2218503851. The reversal of 2218503840 is 483058122.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37601731 + ... + 37601789.

It is an arithmetic number, because the mean of its divisors is an integer number (15361920).

Almost surely, 2^2218503840 is an apocalyptic number.

2218503840 is a gapful number since it is divisible by the number (20) 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 2218503840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4424232960).

2218503840 is an abundant number, since it is smaller than the sum of its proper divisors (6629962080).

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

2218503840 is a wasteful number, since it uses less digits than its factorization.

2218503840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 2218503840 is about 47100.9961678094. The cubic root of 2218503840 is about 1304.2276253369.

The spelling of 2218503840 in words is "two billion, two hundred eighteen million, five hundred three thousand, eight hundred forty".