384648191 has 2 divisors, whose sum is σ = 384648192. Its totient is φ = 384648190.

The previous prime is 384648181. The next prime is 384648193. The reversal of 384648191 is 191846483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 384648191 - 2¹⁸ = 384386047 is a prime.

It is a Sophie Germain prime.

Together with 384648193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384648193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192324095 + 192324096.

It is an arithmetic number, because the mean of its divisors is an integer number (192324096).

Almost surely, 2^384648191 is an apocalyptic number.

384648191 is a deficient number, since it is larger than the sum of its proper divisors (1).

384648191 is an equidigital number, since it uses as much as digits as its factorization.

384648191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 384648191 is about 19612.4498979602. The cubic root of 384648191 is about 727.2569798773.

The spelling of 384648191 in words is "three hundred eighty-four million, six hundred forty-eight thousand, one hundred ninety-one".