159667191 has 12 divisors (see below), whose sum is σ = 230954568. Its totient is φ = 106295184.

The previous prime is 159667169. The next prime is 159667199. The reversal of 159667191 is 191766951.

It is not a de Polignac number, because 159667191 - 2⁹ = 159666679 is a prime.

It is a super-2 number, since 2×159667191² = 50987223763660962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159667199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5505 + ... + 18698.

It is an arithmetic number, because the mean of its divisors is an integer number (19246214).

Almost surely, 2^159667191 is an apocalyptic number.

159667191 is a deficient number, since it is larger than the sum of its proper divisors (71287377).

159667191 is a wasteful number, since it uses less digits than its factorization.

159667191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24942 (or 24939 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 159667191 is about 12635.9483617178. The cubic root of 159667191 is about 542.5068526108.

The spelling of 159667191 in words is "one hundred fifty-nine million, six hundred sixty-seven thousand, one hundred ninety-one".