191330855 has 8 divisors (see below), whose sum is σ = 241681200. Its totient is φ = 145008576.

The previous prime is 191330849. The next prime is 191330863. The reversal of 191330855 is 558033191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191330855 - 2⁸ = 191330599 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1006910 + ... + 1007099.

It is an arithmetic number, because the mean of its divisors is an integer number (30210150).

Almost surely, 2^191330855 is an apocalyptic number.

191330855 is a deficient number, since it is larger than the sum of its proper divisors (50350345).

191330855 is a wasteful number, since it uses less digits than its factorization.

191330855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014033.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 191330855 is about 13832.2396957253. The cubic root of 191330855 is about 576.2288577057.

It can be divided in two parts, 1913 and 30855, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 191330855 in words is "one hundred ninety-one million, three hundred thirty thousand, eight hundred fifty-five".