2164243065 has 16 divisors (see below), whose sum is σ = 3467417856. Its totient is φ = 1152720000.

The previous prime is 2164243063. The next prime is 2164243079. The reversal of 2164243065 is 5603424612.

It is not a de Polignac number, because 2164243065 - 2¹ = 2164243063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2164243063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84796 + ... + 107325.

It is an arithmetic number, because the mean of its divisors is an integer number (216713616).

Almost surely, 2^2164243065 is an apocalyptic number.

It is an amenable number.

2164243065 is a deficient number, since it is larger than the sum of its proper divisors (1303174791).

2164243065 is a wasteful number, since it uses less digits than its factorization.

2164243065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192880.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2164243065 is about 46521.4258702375. The cubic root of 2164243065 is about 1293.5066869093.

Adding to 2164243065 its reverse (5603424612), we get a palindrome (7767667677).

The spelling of 2164243065 in words is "two billion, one hundred sixty-four million, two hundred forty-three thousand, sixty-five".