1159231109 has 8 divisors (see below), whose sum is σ = 1190393952. Its totient is φ = 1128259440.

The previous prime is 1159231103. The next prime is 1159231111. The reversal of 1159231109 is 9011329511.

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-1159231109 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 (1159231103) 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, 35462 + ... + 59799.

It is an arithmetic number, because the mean of its divisors is an integer number (148799244).

Almost surely, 2^1159231109 is an apocalyptic number.

It is an amenable number.

1159231109 is a deficient number, since it is larger than the sum of its proper divisors (31162843).

1159231109 is an equidigital number, since it uses as much as digits as its factorization.

1159231109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95587.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 1159231109 is about 34047.4831522097. The cubic root of 1159231109 is about 1050.4853716677.

The spelling of 1159231109 in words is "one billion, one hundred fifty-nine million, two hundred thirty-one thousand, one hundred nine".