2218857773 has 32 divisors (see below), whose sum is σ = 2620978560. Its totient is φ = 1858671360.

The previous prime is 2218857769. The next prime is 2218857779. The reversal of 2218857773 is 3777588122.

It is a cyclic number.

It is not a de Polignac number, because 2218857773 - 2² = 2218857769 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218857779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623786 + ... + 627332.

It is an arithmetic number, because the mean of its divisors is an integer number (81905580).

Almost surely, 2^2218857773 is an apocalyptic number.

It is an amenable number.

2218857773 is a deficient number, since it is larger than the sum of its proper divisors (402120787).

2218857773 is a wasteful number, since it uses less digits than its factorization.

2218857773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677.

The product of its digits is 1317120, while the sum is 50.

The square root of 2218857773 is about 47104.7531890360. The cubic root of 2218857773 is about 1304.2969790821.

The spelling of 2218857773 in words is "two billion, two hundred eighteen million, eight hundred fifty-seven thousand, seven hundred seventy-three".