2162185817 has 16 divisors (see below), whose sum is σ = 2606090112. Its totient is φ = 1769560320.

The previous prime is 2162185811. The next prime is 2162185819. The reversal of 2162185817 is 7185812612.

It is not a de Polignac number, because 2162185817 - 2⁸ = 2162185561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2162185811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247058 + ... + 255659.

It is an arithmetic number, because the mean of its divisors is an integer number (162880632).

Almost surely, 2^2162185817 is an apocalyptic number.

It is an amenable number.

2162185817 is a deficient number, since it is larger than the sum of its proper divisors (443904295).

2162185817 is a wasteful number, since it uses less digits than its factorization.

2162185817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502768.

The product of its digits is 53760, while the sum is 41.

The square root of 2162185817 is about 46499.3098550935. The cubic root of 2162185817 is about 1293.0967040532.

The spelling of 2162185817 in words is "two billion, one hundred sixty-two million, one hundred eighty-five thousand, eight hundred seventeen".