2160228305 has 4 divisors (see below), whose sum is σ = 2592273972. Its totient is φ = 1728182640.

The previous prime is 2160228289. The next prime is 2160228307. The reversal of 2160228305 is 5038220612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1463215504 + 697012801 = 38252^2 + 26401^2 .

It is not a de Polignac number, because 2160228305 - 2⁴ = 2160228289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2160228307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216022826 + ... + 216022835.

It is an arithmetic number, because the mean of its divisors is an integer number (648068493).

Almost surely, 2^2160228305 is an apocalyptic number.

It is an amenable number.

2160228305 is a deficient number, since it is larger than the sum of its proper divisors (432045667).

2160228305 is an equidigital number, since it uses as much as digits as its factorization.

2160228305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432045666.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2160228305 is about 46478.2562603203. The cubic root of 2160228305 is about 1292.7063557676.

Adding to 2160228305 its reverse (5038220612), we get a palindrome (7198448917).

The spelling of 2160228305 in words is "two billion, one hundred sixty million, two hundred twenty-eight thousand, three hundred five".