1145728759 has 4 divisors (see below), whose sum is σ = 1309404304. Its totient is φ = 982053216.

The previous prime is 1145728711. The next prime is 1145728799. The reversal of 1145728759 is 9578275411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145728759 - 2⁷ = 1145728631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145728799) 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 3 ways as a sum of consecutive naturals, for example, 81837762 + ... + 81837775.

It is an arithmetic number, because the mean of its divisors is an integer number (327351076).

Almost surely, 2^1145728759 is an apocalyptic number.

1145728759 is a deficient number, since it is larger than the sum of its proper divisors (163675545).

1145728759 is an equidigital number, since it uses as much as digits as its factorization.

1145728759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163675544.

The product of its digits is 705600, while the sum is 49.

The square root of 1145728759 is about 33848.6153187985. The cubic root of 1145728759 is about 1046.3908615234.

The spelling of 1145728759 in words is "one billion, one hundred forty-five million, seven hundred twenty-eight thousand, seven hundred fifty-nine".