1044004545 has 28 divisors (see below), whose sum is σ = 1878355476. Its totient is φ = 556800480.

The previous prime is 1044004541. The next prime is 1044004651. The reversal of 1044004545 is 5454004401.

It can be written as a sum of positive squares in 2 ways, for example, as 812934144 + 231070401 = 28512^2 + 15201^2 .

It is not a de Polignac number, because 1044004545 - 2² = 1044004541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1044004541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 139566 + ... + 146855.

Almost surely, 2^1044004545 is an apocalyptic number.

1044004545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1044004545 is a deficient number, since it is larger than the sum of its proper divisors (834350931).

1044004545 is an frugal number, since it uses more digits than its factorization.

1044004545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286444 (or 286429 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1044004545 is about 32311.0591748398. The cubic root of 1044004545 is about 1014.4581365230.

Adding to 1044004545 its reverse (5454004401), we get a palindrome (6498008946).

The spelling of 1044004545 in words is "one billion, forty-four million, four thousand, five hundred forty-five".