1129568009 has 8 divisors (see below), whose sum is σ = 1237255560. Its totient is φ = 1026462976.

The previous prime is 1129568003. The next prime is 1129568023. The reversal of 1129568009 is 9008659211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 639078400 + 490489609 = 25280^2 + 22147^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129568009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129568003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145114 + ... + 1146099.

It is an arithmetic number, because the mean of its divisors is an integer number (154656945).

Almost surely, 2^1129568009 is an apocalyptic number.

It is an amenable number.

1129568009 is a deficient number, since it is larger than the sum of its proper divisors (107687551).

1129568009 is a wasteful number, since it uses less digits than its factorization.

1129568009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291259.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 1129568009 is about 33609.0465351221. The cubic root of 1129568009 is about 1041.4476907800.

The spelling of 1129568009 in words is "one billion, one hundred twenty-nine million, five hundred sixty-eight thousand, nine".