2218280605 has 8 divisors (see below), whose sum is σ = 2726862264. Its totient is φ = 1731340800.

The previous prime is 2218280551. The next prime is 2218280611. The reversal of 2218280605 is 5060828122.

It can be written as a sum of positive squares in 4 ways, for example, as 215091556 + 2003189049 = 14666^2 + 44757^2 .

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

It is not a de Polignac number, because 2218280605 - 2²³ = 2209891997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5410236 + ... + 5410645.

It is an arithmetic number, because the mean of its divisors is an integer number (340857783).

Almost surely, 2^2218280605 is an apocalyptic number.

It is an amenable number.

2218280605 is a deficient number, since it is larger than the sum of its proper divisors (508581659).

2218280605 is a wasteful number, since it uses less digits than its factorization.

2218280605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820927.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 2218280605 is about 47098.6263600118. The cubic root of 2218280605 is about 1304.1838782832.

The spelling of 2218280605 in words is "two billion, two hundred eighteen million, two hundred eighty thousand, six hundred five".