191092911005 has 8 divisors (see below), whose sum is σ = 239281558272. Its totient is φ = 146227618768.

The previous prime is 191092911001. The next prime is 191092911011. The reversal of 191092911005 is 500119290191.

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 191092911005 - 2² = 191092911001 is a prime.

It is a super-2 number, since 2×191092911005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191092911005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191092911001) 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, 830838629 + ... + 830838858.

It is an arithmetic number, because the mean of its divisors is an integer number (29910194784).

Almost surely, 2^191092911005 is an apocalyptic number.

It is an amenable number.

191092911005 is a deficient number, since it is larger than the sum of its proper divisors (48188647267).

191092911005 is a wasteful number, since it uses less digits than its factorization.

191092911005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661677515.

The product of its (nonzero) digits is 7290, while the sum is 38.

The spelling of 191092911005 in words is "one hundred ninety-one billion, ninety-two million, nine hundred eleven thousand, five".