2218917888 has 360 divisors, whose sum is σ = 7612632720. Its totient is φ = 637009920.

The previous prime is 2218917887. The next prime is 2218917889. The reversal of 2218917888 is 8887198122.

It is an interprime number because it is at equal distance from previous prime (2218917887) and next prime (2218917889).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2218917887) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 116785143 + ... + 116785161.

It is an arithmetic number, because the mean of its divisors is an integer number (21146202).

Almost surely, 2^2218917888 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 2218917888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3806316360).

2218917888 is an abundant number, since it is smaller than the sum of its proper divisors (5393714832).

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

2218917888 is an frugal number, since it uses more digits than its factorization.

2218917888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 35 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 54.

The square root of 2218917888 is about 47105.3912838011. The cubic root of 2218917888 is about 1304.3087579811.

The spelling of 2218917888 in words is "two billion, two hundred eighteen million, nine hundred seventeen thousand, eight hundred eighty-eight".