2218001400 has 96 divisors (see below), whose sum is σ = 7639801200. Its totient is φ = 591465600.

The previous prime is 2218001377. The next prime is 2218001411. The reversal of 2218001400 is 41008122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199971 + ... + 210770.

Almost surely, 2^2218001400 is an apocalyptic number.

2218001400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218001400 is an abundant number, since it is smaller than the sum of its proper divisors (5421799800).

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

2218001400 is a wasteful number, since it uses less digits than its factorization.

2218001400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410766 (or 410751 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2218001400 is about 47095.6622206334. The cubic root of 2218001400 is about 1304.1291587349.

Adding to 2218001400 its reverse (41008122), we get a palindrome (2259009522).

The spelling of 2218001400 in words is "two billion, two hundred eighteen million, one thousand, four hundred".