191160087 has 16 divisors (see below), whose sum is σ = 271019520. Its totient is φ = 119434112.

The previous prime is 191160071. The next prime is 191160091. The reversal of 191160087 is 780061191.

It is not a de Polignac number, because 191160087 - 2⁴ = 191160071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191160037) 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 in 15 ways as a sum of consecutive naturals, for example, 4348 + ... + 20030.

It is an arithmetic number, because the mean of its divisors is an integer number (16938720).

Almost surely, 2^191160087 is an apocalyptic number.

191160087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

191160087 is a deficient number, since it is larger than the sum of its proper divisors (79859433).

191160087 is a wasteful number, since it uses less digits than its factorization.

191160087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15942.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 191160087 is about 13826.0654923952. The cubic root of 191160087 is about 576.0573733601.

The spelling of 191160087 in words is "one hundred ninety-one million, one hundred sixty thousand, eighty-seven".