159885191 has 2 divisors, whose sum is σ = 159885192. Its totient is φ = 159885190.

The previous prime is 159885181. The next prime is 159885203. The reversal of 159885191 is 191588951.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159885191 is a prime.

It is a super-4 number, since 4×159885191⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159885151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79942595 + 79942596.

It is an arithmetic number, because the mean of its divisors is an integer number (79942596).

Almost surely, 2^159885191 is an apocalyptic number.

159885191 is a deficient number, since it is larger than the sum of its proper divisors (1).

159885191 is an equidigital number, since it uses as much as digits as its factorization.

159885191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 47.

The square root of 159885191 is about 12644.5716020749. The cubic root of 159885191 is about 542.7536424267.

The spelling of 159885191 in words is "one hundred fifty-nine million, eight hundred eighty-five thousand, one hundred ninety-one".