191145793 has 8 divisors (see below), whose sum is σ = 198070400. Its totient is φ = 184333968.

The previous prime is 191145769. The next prime is 191145803. The reversal of 191145793 is 397541191.

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 191145793 - 2⁵ = 191145761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191140793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24738 + ... + 31531.

It is an arithmetic number, because the mean of its divisors is an integer number (24758800).

Almost surely, 2^191145793 is an apocalyptic number.

It is an amenable number.

191145793 is a deficient number, since it is larger than the sum of its proper divisors (6924607).

191145793 is an equidigital number, since it uses as much as digits as its factorization.

191145793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56391.

The product of its digits is 34020, while the sum is 40.

The square root of 191145793 is about 13825.5485605454. The cubic root of 191145793 is about 576.0430147676.

The spelling of 191145793 in words is "one hundred ninety-one million, one hundred forty-five thousand, seven hundred ninety-three".