2217049785 has 160 divisors (see below), whose sum is σ = 4332303360. Its totient is φ = 1082419200.

The previous prime is 2217049733. The next prime is 2217049829. The reversal of 2217049785 is 5879407122.

It is a happy number.

2217049785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2217049785 - 2¹⁶ = 2216984249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2217049785.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 30370509 + ... + 30370581.

It is an arithmetic number, because the mean of its divisors is an integer number (27076896).

Almost surely, 2^2217049785 is an apocalyptic number.

It is an amenable number.

2217049785 is a deficient number, since it is larger than the sum of its proper divisors (2115253575).

2217049785 is a wasteful number, since it uses less digits than its factorization.

2217049785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 2217049785 is about 47085.5581362269. The cubic root of 2217049785 is about 1303.9426234760.

The spelling of 2217049785 in words is "two billion, two hundred seventeen million, forty-nine thousand, seven hundred eighty-five".