191430480983 has 4 divisors (see below), whose sum is σ = 218777692560. Its totient is φ = 164083269408.

The previous prime is 191430480973. The next prime is 191430481003. The reversal of 191430480983 is 389084034191.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 191430480983 - 2¹⁰ = 191430479959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191430480973) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13673605778 + ... + 13673605791.

It is an arithmetic number, because the mean of its divisors is an integer number (54694423140).

Almost surely, 2^191430480983 is an apocalyptic number.

191430480983 is a deficient number, since it is larger than the sum of its proper divisors (27347211577).

191430480983 is an equidigital number, since it uses as much as digits as its factorization.

191430480983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27347211576.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 191430480983 in words is "one hundred ninety-one billion, four hundred thirty million, four hundred eighty thousand, nine hundred eighty-three".