1159319911 has 4 divisors (see below), whose sum is σ = 1159423632. Its totient is φ = 1159216192.

The previous prime is 1159319873. The next prime is 1159319923. The reversal of 1159319911 is 1199139511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1199139511 = 97 ⋅12362263.

It is a cyclic number.

It is not a de Polignac number, because 1159319911 - 2⁷ = 1159319783 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 (1159319951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32746 + ... + 58231.

It is an arithmetic number, because the mean of its divisors is an integer number (289855908).

Almost surely, 2^1159319911 is an apocalyptic number.

1159319911 is a deficient number, since it is larger than the sum of its proper divisors (103721).

1159319911 is an equidigital number, since it uses as much as digits as its factorization.

1159319911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103720.

The product of its digits is 10935, while the sum is 40.

The square root of 1159319911 is about 34048.7872177556. The cubic root of 1159319911 is about 1050.5121948551.

The spelling of 1159319911 in words is "one billion, one hundred fifty-nine million, three hundred nineteen thousand, nine hundred eleven".