2164663265 has 16 divisors (see below), whose sum is σ = 2698448256. Its totient is φ = 1665686400.

The previous prime is 2164663253. The next prime is 2164663297. The reversal of 2164663265 is 5623664612.

It is a happy number.

It is not a de Polignac number, because 2164663265 - 2²⁰ = 2163614689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59807 + ... + 88916.

It is an arithmetic number, because the mean of its divisors is an integer number (168653016).

Almost surely, 2^2164663265 is an apocalyptic number.

It is an amenable number.

2164663265 is a deficient number, since it is larger than the sum of its proper divisors (533784991).

2164663265 is a wasteful number, since it uses less digits than its factorization.

2164663265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148840.

The product of its digits is 311040, while the sum is 41.

The square root of 2164663265 is about 46525.9418496821. The cubic root of 2164663265 is about 1293.5903953655.

The spelling of 2164663265 in words is "two billion, one hundred sixty-four million, six hundred sixty-three thousand, two hundred sixty-five".