2145303305 has 8 divisors (see below), whose sum is σ = 2597146632. Its totient is φ = 1701054208.

The previous prime is 2145303299. The next prime is 2145303317. The reversal of 2145303305 is 5033035412.

It can be written as a sum of positive squares in 4 ways, for example, as 286658761 + 1858644544 = 16931^2 + 43112^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145303305 - 2¹² = 2145299209 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 7 ways as a sum of consecutive naturals, for example, 1897934 + ... + 1899063.

It is an arithmetic number, because the mean of its divisors is an integer number (324643329).

Almost surely, 2^2145303305 is an apocalyptic number.

It is an amenable number.

2145303305 is a deficient number, since it is larger than the sum of its proper divisors (451843327).

2145303305 is a wasteful number, since it uses less digits than its factorization.

2145303305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797115.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2145303305 is about 46317.4190235164. The cubic root of 2145303305 is about 1289.7223738029.

Adding to 2145303305 its reverse (5033035412), we get a palindrome (7178338717).

The spelling of 2145303305 in words is "two billion, one hundred forty-five million, three hundred three thousand, three hundred five".