1044135609 has 8 divisors (see below), whose sum is σ = 1518742752. Its totient is φ = 632809440.

The previous prime is 1044135607. The next prime is 1044135611. The reversal of 1044135609 is 9065314401.

It is an interprime number because it is at equal distance from previous prime (1044135607) and next prime (1044135611).

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

It is not a de Polignac number, because 1044135609 - 2¹ = 1044135607 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 31640473 = 1044135609 / (1 + 0 + 4 + 4 + 1 + 3 + 5 + 6 + 0 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 1044135609.

It is not an unprimeable number, because it can be changed into a prime (1044135607) 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 7 ways as a sum of consecutive naturals, for example, 15820204 + ... + 15820269.

It is an arithmetic number, because the mean of its divisors is an integer number (189842844).

Almost surely, 2^1044135609 is an apocalyptic number.

It is an amenable number.

1044135609 is a deficient number, since it is larger than the sum of its proper divisors (474607143).

1044135609 is a wasteful number, since it uses less digits than its factorization.

1044135609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31640487.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1044135609 is about 32313.0872712590. The cubic root of 1044135609 is about 1014.5005863311.

The spelling of 1044135609 in words is "one billion, forty-four million, one hundred thirty-five thousand, six hundred nine".