380520191 has 2 divisors, whose sum is σ = 380520192. Its totient is φ = 380520190.

The previous prime is 380520187. The next prime is 380520193. The reversal of 380520191 is 191025083.

It is a strong prime.

It is an emirp because it is prime and its reverse (191025083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380520191 - 2² = 380520187 is a prime.

Together with 380520193, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_20351846 and since 380520191 and 20351846 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380520193) 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 as a sum of consecutive naturals, namely, 190260095 + 190260096.

It is an arithmetic number, because the mean of its divisors is an integer number (190260096).

Almost surely, 2^380520191 is an apocalyptic number.

380520191 is a deficient number, since it is larger than the sum of its proper divisors (1).

380520191 is an equidigital number, since it uses as much as digits as its factorization.

380520191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 380520191 is about 19506.9267441081. The cubic root of 380520191 is about 724.6460045908.

The spelling of 380520191 in words is "three hundred eighty million, five hundred twenty thousand, one hundred ninety-one".