327680191 has 2 divisors, whose sum is σ = 327680192. Its totient is φ = 327680190.

The previous prime is 327680189. The next prime is 327680203. The reversal of 327680191 is 191086723.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 327680191 - 2¹ = 327680189 is a prime.

Together with 327680189, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 327680191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327680131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163840095 + 163840096.

It is an arithmetic number, because the mean of its divisors is an integer number (163840096).

Almost surely, 2^327680191 is an apocalyptic number.

327680191 is a deficient number, since it is larger than the sum of its proper divisors (1).

327680191 is an equidigital number, since it uses as much as digits as its factorization.

327680191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 327680191 is about 18101.9388740543. The cubic root of 327680191 is about 689.4192347610.

The spelling of 327680191 in words is "three hundred twenty-seven million, six hundred eighty thousand, one hundred ninety-one".