2165202783 has 6 divisors (see below), whose sum is σ = 3127515144. Its totient is φ = 1443468516.

The previous prime is 2165202763. The next prime is 2165202791. The reversal of 2165202783 is 3872025612.

It is not a de Polignac number, because 2165202783 - 2⁹ = 2165202271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165202713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120289035 + ... + 120289052.

It is an arithmetic number, because the mean of its divisors is an integer number (521252524).

Almost surely, 2^2165202783 is an apocalyptic number.

2165202783 is a deficient number, since it is larger than the sum of its proper divisors (962312361).

2165202783 is a wasteful number, since it uses less digits than its factorization.

2165202783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240578093 (or 240578090 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2165202783 is about 46531.7395226097. The cubic root of 2165202783 is about 1293.6978573958.

The spelling of 2165202783 in words is "two billion, one hundred sixty-five million, two hundred two thousand, seven hundred eighty-three".