1158159909 has 8 divisors (see below), whose sum is σ = 1544827360. Its totient is φ = 771799536.

The previous prime is 1158159889. The next prime is 1158159931. The reversal of 1158159909 is 9099518511.

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

It is not a de Polignac number, because 1158159909 - 2⁹ = 1158159397 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 (1158154909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67819 + ... + 83160.

It is an arithmetic number, because the mean of its divisors is an integer number (193103420).

Almost surely, 2^1158159909 is an apocalyptic number.

It is an amenable number.

1158159909 is a deficient number, since it is larger than the sum of its proper divisors (386667451).

1158159909 is a wasteful number, since it uses less digits than its factorization.

1158159909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153539.

The product of its (nonzero) digits is 145800, while the sum is 48.

The square root of 1158159909 is about 34031.7485445576. The cubic root of 1158159909 is about 1050.1617011737.

The spelling of 1158159909 in words is "one billion, one hundred fifty-eight million, one hundred fifty-nine thousand, nine hundred nine".