381366367 has 2 divisors, whose sum is σ = 381366368. Its totient is φ = 381366366.

The previous prime is 381366361. The next prime is 381366397. The reversal of 381366367 is 763663183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381366367 - 2¹⁵ = 381333599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381366361) 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 as a sum of consecutive naturals, namely, 190683183 + 190683184.

It is an arithmetic number, because the mean of its divisors is an integer number (190683184).

Almost surely, 2^381366367 is an apocalyptic number.

381366367 is a deficient number, since it is larger than the sum of its proper divisors (1).

381366367 is an equidigital number, since it uses as much as digits as its factorization.

381366367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 381366367 is about 19528.6038159414. The cubic root of 381366367 is about 725.1827471147.

The spelling of 381366367 in words is "three hundred eighty-one million, three hundred sixty-six thousand, three hundred sixty-seven".