1044240645 has 16 divisors (see below), whose sum is σ = 1909468800. Its totient is φ = 477367104.

The previous prime is 1044240643. The next prime is 1044240653. The reversal of 1044240645 is 5460424401.

It is a happy number.

It is not a de Polignac number, because 1044240645 - 2¹ = 1044240643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044240643) 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 15 ways as a sum of consecutive naturals, for example, 4972470 + ... + 4972679.

It is an arithmetic number, because the mean of its divisors is an integer number (119341800).

Almost surely, 2^1044240645 is an apocalyptic number.

1044240645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1044240645 is a deficient number, since it is larger than the sum of its proper divisors (865228155).

1044240645 is an equidigital number, since it uses as much as digits as its factorization.

1044240645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945164.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 1044240645 is about 32314.7125161280. The cubic root of 1044240645 is about 1014.5346034676.

The spelling of 1044240645 in words is "one billion, forty-four million, two hundred forty thousand, six hundred forty-five".