159386321 has 2 divisors, whose sum is σ = 159386322. Its totient is φ = 159386320.

The previous prime is 159386309. The next prime is 159386323. The reversal of 159386321 is 123683951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157151296 + 2235025 = 12536^2 + 1495^2 .

It is an emirp because it is prime and its reverse (123683951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159386321 - 2¹⁰ = 159385297 is a prime.

Together with 159386323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159386323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79693160 + 79693161.

It is an arithmetic number, because the mean of its divisors is an integer number (79693161).

Almost surely, 2^159386321 is an apocalyptic number.

It is an amenable number.

159386321 is a deficient number, since it is larger than the sum of its proper divisors (1).

159386321 is an equidigital number, since it uses as much as digits as its factorization.

159386321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 159386321 is about 12624.8295434037. The cubic root of 159386321 is about 542.1885585957.

The spelling of 159386321 in words is "one hundred fifty-nine million, three hundred eighty-six thousand, three hundred twenty-one".