2164272765 has 16 divisors (see below), whose sum is σ = 3511610496. Its totient is φ = 1138020800.

The previous prime is 2164272763. The next prime is 2164272809. The reversal of 2164272765 is 5672724612.

It is not a de Polignac number, because 2164272765 - 2¹ = 2164272763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164272763) 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, 1015026 + ... + 1017155.

It is an arithmetic number, because the mean of its divisors is an integer number (219475656).

Almost surely, 2^2164272765 is an apocalyptic number.

It is an amenable number.

2164272765 is a deficient number, since it is larger than the sum of its proper divisors (1347337731).

2164272765 is a wasteful number, since it uses less digits than its factorization.

2164272765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032260.

The product of its digits is 282240, while the sum is 42.

The square root of 2164272765 is about 46521.7450768993. The cubic root of 2164272765 is about 1293.5126038314.

The spelling of 2164272765 in words is "two billion, one hundred sixty-four million, two hundred seventy-two thousand, seven hundred sixty-five".