191393440883 has 8 divisors (see below), whose sum is σ = 203253225552. Its totient is φ = 179600472576.

The previous prime is 191393440877. The next prime is 191393440913. The reversal of 191393440883 is 388044393191.

191393440883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 191393440883 - 2⁸ = 191393440627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191393440283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16698185 + ... + 16709642.

It is an arithmetic number, because the mean of its divisors is an integer number (25406653194).

Almost surely, 2^191393440883 is an apocalyptic number.

191393440883 is a deficient number, since it is larger than the sum of its proper divisors (11859784669).

191393440883 is a wasteful number, since it uses less digits than its factorization.

191393440883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33408181.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 191393440883 in words is "one hundred ninety-one billion, three hundred ninety-three million, four hundred forty thousand, eight hundred eighty-three".