1128768609 has 8 divisors (see below), whose sum is σ = 1505804032. Its totient is φ = 752122800.

The previous prime is 1128768593. The next prime is 1128768611. The reversal of 1128768609 is 9068678211.

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

It is not a de Polignac number, because 1128768609 - 2⁴ = 1128768593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128768649) 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, 90574 + ... + 102279.

It is an arithmetic number, because the mean of its divisors is an integer number (188225504).

Almost surely, 2^1128768609 is an apocalyptic number.

It is an amenable number.

1128768609 is a deficient number, since it is larger than the sum of its proper divisors (377035423).

1128768609 is a wasteful number, since it uses less digits than its factorization.

1128768609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194807.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1128768609 is about 33597.1517989249. The cubic root of 1128768609 is about 1041.2019538404.

The spelling of 1128768609 in words is "one billion, one hundred twenty-eight million, seven hundred sixty-eight thousand, six hundred nine".