2165728675 has 12 divisors (see below), whose sum is σ = 2929640616. Its totient is φ = 1575075200.

The previous prime is 2165728633. The next prime is 2165728679. The reversal of 2165728675 is 5768275612.

It is a happy number.

It is not a de Polignac number, because 2165728675 - 2¹¹ = 2165726627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165728679) 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 11 ways as a sum of consecutive naturals, for example, 3937414 + ... + 3937963.

It is an arithmetic number, because the mean of its divisors is an integer number (244136718).

Almost surely, 2^2165728675 is an apocalyptic number.

2165728675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2165728675 is a deficient number, since it is larger than the sum of its proper divisors (763911941).

2165728675 is a wasteful number, since it uses less digits than its factorization.

2165728675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875398 (or 7875393 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 2165728675 is about 46537.3900750783. The cubic root of 2165728675 is about 1293.8025881990.

The spelling of 2165728675 in words is "two billion, one hundred sixty-five million, seven hundred twenty-eight thousand, six hundred seventy-five".