159133809 has 4 divisors (see below), whose sum is σ = 212178416. Its totient is φ = 106089204.

The previous prime is 159133801. The next prime is 159133829. The reversal of 159133809 is 908331951.

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: 908331951 = 3 ⋅302777317.

It is not a de Polignac number, because 159133809 - 2³ = 159133801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159133801) 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 3 ways as a sum of consecutive naturals, for example, 26522299 + ... + 26522304.

It is an arithmetic number, because the mean of its divisors is an integer number (53044604).

Almost surely, 2^159133809 is an apocalyptic number.

It is an amenable number.

159133809 is a deficient number, since it is larger than the sum of its proper divisors (53044607).

159133809 is an equidigital number, since it uses as much as digits as its factorization.

159133809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53044606.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 159133809 is about 12614.8249690592. The cubic root of 159133809 is about 541.9020817287.

The spelling of 159133809 in words is "one hundred fifty-nine million, one hundred thirty-three thousand, eight hundred nine".