2218668336 has 30 divisors (see below), whose sum is σ = 6209190260. Its totient is φ = 739556064.

The previous prime is 2218668299. The next prime is 2218668337. The reversal of 2218668336 is 6338668122.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2218668291 and 2218668300.

It is not an unprimeable number, because it can be changed into a prime (2218668337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7703566 + ... + 7703853.

Almost surely, 2^2218668336 is an apocalyptic number.

It is an amenable number.

2218668336 is an abundant number, since it is smaller than the sum of its proper divisors (3990521924).

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

2218668336 is a wasteful number, since it uses less digits than its factorization.

2218668336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15407433 (or 15407424 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 2218668336 is about 47102.7423405474. The cubic root of 2218668336 is about 1304.2598595122.

The spelling of 2218668336 in words is "two billion, two hundred eighteen million, six hundred sixty-eight thousand, three hundred thirty-six".