1128441265 has 8 divisors (see below), whose sum is σ = 1547576640. Its totient is φ = 773788272.

The previous prime is 1128441263. The next prime is 1128441277. The reversal of 1128441265 is 5621448211.

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

It is a cyclic number.

It is not a de Polignac number, because 1128441265 - 2¹ = 1128441263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128441265.

It is not an unprimeable number, because it can be changed into a prime (1128441263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16120555 + ... + 16120624.

It is an arithmetic number, because the mean of its divisors is an integer number (193447080).

Almost surely, 2^1128441265 is an apocalyptic number.

It is an amenable number.

1128441265 is a deficient number, since it is larger than the sum of its proper divisors (419135375).

1128441265 is an equidigital number, since it uses as much as digits as its factorization.

1128441265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32241191.

The product of its digits is 15360, while the sum is 34.

The square root of 1128441265 is about 33592.2798422495. The cubic root of 1128441265 is about 1041.1012942478.

Adding to 1128441265 its reverse (5621448211), we get a palindrome (6749889476).

The spelling of 1128441265 in words is "one billion, one hundred twenty-eight million, four hundred forty-one thousand, two hundred sixty-five".