2045130305 has 4 divisors (see below), whose sum is σ = 2454156372. Its totient is φ = 1636104240.

The previous prime is 2045130289. The next prime is 2045130313. The reversal of 2045130305 is 5030315402.

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 239135296 + 1805995009 = 15464^2 + 42497^2 .

It is not a de Polignac number, because 2045130305 - 2⁴ = 2045130289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204513026 + ... + 204513035.

It is an arithmetic number, because the mean of its divisors is an integer number (613539093).

Almost surely, 2^2045130305 is an apocalyptic number.

It is an amenable number.

2045130305 is a deficient number, since it is larger than the sum of its proper divisors (409026067).

2045130305 is an equidigital number, since it uses as much as digits as its factorization.

2045130305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409026066.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2045130305 is about 45223.1169314987. The cubic root of 2045130305 is about 1269.3274188919.

Adding to 2045130305 its reverse (5030315402), we get a palindrome (7075445707).

The spelling of 2045130305 in words is "two billion, forty-five million, one hundred thirty thousand, three hundred five".