2243803565 has 16 divisors (see below), whose sum is σ = 2897694000. Its totient is φ = 1661752320.

The previous prime is 2243803559. The next prime is 2243803579. The reversal of 2243803565 is 5653083422.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 330003556 + 1913800009 = 18166^2 + 43747^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2243803565 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211190 + ... + 221559.

It is an arithmetic number, because the mean of its divisors is an integer number (181105875).

Almost surely, 2^2243803565 is an apocalyptic number.

It is an amenable number.

2243803565 is a deficient number, since it is larger than the sum of its proper divisors (653890435).

2243803565 is a wasteful number, since it uses less digits than its factorization.

2243803565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432832.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 2243803565 is about 47368.8037108813. The cubic root of 2243803565 is about 1309.1666834726.

Adding to 2243803565 its reverse (5653083422), we get a palindrome (7896886987).

It can be divided in two parts, 224 and 3803565, that multiplied together give a triangular number (851998560 = T₄₁₂₇₉).

The spelling of 2243803565 in words is "two billion, two hundred forty-three million, eight hundred three thousand, five hundred sixty-five".