191058 has 16 divisors (see below), whose sum is σ = 436800. Its totient is φ = 54576.

The previous prime is 191057. The next prime is 191071. The reversal of 191058 is 850191.

191058 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 191058.

It is not an unprimeable number, because it can be changed into a prime (191057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2233 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (27300).

2¹⁹¹⁰⁵⁸ is an apocalyptic number.

191058 is an abundant number, since it is smaller than the sum of its proper divisors (245742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191058 is a wasteful number, since it uses less digits than its factorization.

191058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 191058 is about 437.1018188020. The cubic root of 191058 is about 57.5954809340.

It can be divided in two parts, 19 and 1058, that multiplied together give a palindrome (20102).

The spelling of 191058 in words is "one hundred ninety-one thousand, fifty-eight".