2165332663 has 16 divisors (see below), whose sum is σ = 2461419520. Its totient is φ = 1888331616.

The previous prime is 2165332661. The next prime is 2165332669. The reversal of 2165332663 is 3662335612.

It is a cyclic number.

It is not a de Polignac number, because 2165332663 - 2¹ = 2165332661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165332661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78706 + ... + 102592.

It is an arithmetic number, because the mean of its divisors is an integer number (153838720).

Almost surely, 2^2165332663 is an apocalyptic number.

2165332663 is a deficient number, since it is larger than the sum of its proper divisors (296086857).

2165332663 is a wasteful number, since it uses less digits than its factorization.

2165332663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24286.

The product of its digits is 116640, while the sum is 37.

The square root of 2165332663 is about 46533.1351082215. The cubic root of 2165332663 is about 1293.7237244292.

The spelling of 2165332663 in words is "two billion, one hundred sixty-five million, three hundred thirty-two thousand, six hundred sixty-three".