191159097 has 16 divisors (see below), whose sum is σ = 270103680. Its totient is φ = 120041600.

The previous prime is 191159083. The next prime is 191159099. The reversal of 191159097 is 790951191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 191159097 - 2⁴ = 191159081 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (191159099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23229 + ... + 30362.

It is an arithmetic number, because the mean of its divisors is an integer number (16881480).

Almost surely, 2^191159097 is an apocalyptic number.

It is an amenable number.

191159097 is a deficient number, since it is larger than the sum of its proper divisors (78944583).

191159097 is a wasteful number, since it uses less digits than its factorization.

191159097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53664.

The product of its (nonzero) digits is 25515, while the sum is 42.

The square root of 191159097 is about 13826.0296904064. The cubic root of 191159097 is about 576.0563789095.

The spelling of 191159097 in words is "one hundred ninety-one million, one hundred fifty-nine thousand, ninety-seven".