380905667 has 2 divisors, whose sum is σ = 380905668. Its totient is φ = 380905666.

The previous prime is 380905583. The next prime is 380905669. The reversal of 380905667 is 766509083.

It is a strong prime.

It is an emirp because it is prime and its reverse (766509083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380905667 - 2¹² = 380901571 is a prime.

Together with 380905669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380905669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190452833 + 190452834.

It is an arithmetic number, because the mean of its divisors is an integer number (190452834).

Almost surely, 2^380905667 is an apocalyptic number.

380905667 is a deficient number, since it is larger than the sum of its proper divisors (1).

380905667 is an equidigital number, since it uses as much as digits as its factorization.

380905667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 380905667 is about 19516.8047333574. The cubic root of 380905667 is about 724.8906165536.

The spelling of 380905667 in words is "three hundred eighty million, nine hundred five thousand, six hundred sixty-seven".