1044320045 has 16 divisors (see below), whose sum is σ = 1260310320. Its totient is φ = 830721024.

The previous prime is 1044320041. The next prime is 1044320063. The reversal of 1044320045 is 5400234401.

It can be written as a sum of positive squares in 8 ways, for example, as 317801929 + 726518116 = 17827^2 + 26954^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044320045 - 2² = 1044320041 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1044320045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044320041) by changing a digit.

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, 1034501 + ... + 1035509.

It is an arithmetic number, because the mean of its divisors is an integer number (78769395).

Almost surely, 2^1044320045 is an apocalyptic number.

It is an amenable number.

1044320045 is a deficient number, since it is larger than the sum of its proper divisors (215990275).

1044320045 is a wasteful number, since it uses less digits than its factorization.

1044320045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1044320045 is about 32315.9410353466. The cubic root of 1044320045 is about 1014.5603165719.

Adding to 1044320045 its reverse (5400234401), we get a palindrome (6444554446).

The spelling of 1044320045 in words is "one billion, forty-four million, three hundred twenty thousand, forty-five".