2218653689 has 8 divisors (see below), whose sum is σ = 2558867520. Its totient is φ = 1884255696.

The previous prime is 2218653683. The next prime is 2218653691. The reversal of 2218653689 is 9863568122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2218653689 - 2⁴ = 2218653673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218653683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1453139 + ... + 1454664.

It is an arithmetic number, because the mean of its divisors is an integer number (319858440).

Almost surely, 2^2218653689 is an apocalyptic number.

It is an amenable number.

2218653689 is a deficient number, since it is larger than the sum of its proper divisors (340213831).

2218653689 is a wasteful number, since it uses less digits than its factorization.

2218653689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907919.

The product of its digits is 1244160, while the sum is 50.

The square root of 2218653689 is about 47102.5868610207. The cubic root of 2218653689 is about 1304.2569893917.

The spelling of 2218653689 in words is "two billion, two hundred eighteen million, six hundred fifty-three thousand, six hundred eighty-nine".