159235009 has 2 divisors, whose sum is σ = 159235010. Its totient is φ = 159235008.

The previous prime is 159234997. The next prime is 159235057. The reversal of 159235009 is 900532951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149450625 + 9784384 = 12225^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 159235009 - 2²³ = 150846401 is a prime.

It is not a weakly prime, because it can be changed into another prime (159235099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79617504 + 79617505.

It is an arithmetic number, because the mean of its divisors is an integer number (79617505).

Almost surely, 2^159235009 is an apocalyptic number.

It is an amenable number.

159235009 is a deficient number, since it is larger than the sum of its proper divisors (1).

159235009 is an equidigital number, since it uses as much as digits as its factorization.

159235009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 159235009 is about 12618.8354850992. The cubic root of 159235009 is about 542.0169302954.

The spelling of 159235009 in words is "one hundred fifty-nine million, two hundred thirty-five thousand, nine".