1140816289 has 4 divisors (see below), whose sum is σ = 1165089024. Its totient is φ = 1116543556.

The previous prime is 1140816233. The next prime is 1140816323. The reversal of 1140816289 is 9826180411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9826180411 = 3761 ⋅2612651.

It is a cyclic number.

It is not a de Polignac number, because 1140816289 - 2⁹ = 1140815777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140811289) 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 3 ways as a sum of consecutive naturals, for example, 12136297 + ... + 12136390.

It is an arithmetic number, because the mean of its divisors is an integer number (291272256).

Almost surely, 2^1140816289 is an apocalyptic number.

It is an amenable number.

1140816289 is a deficient number, since it is larger than the sum of its proper divisors (24272735).

1140816289 is an equidigital number, since it uses as much as digits as its factorization.

1140816289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24272734.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1140816289 is about 33775.9720659524. The cubic root of 1140816289 is about 1044.8932039851.

The spelling of 1140816289 in words is "one billion, one hundred forty million, eight hundred sixteen thousand, two hundred eighty-nine".