381627667 has 2 divisors, whose sum is σ = 381627668. Its totient is φ = 381627666.

The previous prime is 381627647. The next prime is 381627677. The reversal of 381627667 is 766726183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381627667 - 2¹⁹ = 381103379 is a prime.

It is not a weakly prime, because it can be changed into another prime (381627637) 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, 190813833 + 190813834.

It is an arithmetic number, because the mean of its divisors is an integer number (190813834).

Almost surely, 2^381627667 is an apocalyptic number.

381627667 is a deficient number, since it is larger than the sum of its proper divisors (1).

381627667 is an equidigital number, since it uses as much as digits as its factorization.

381627667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 381627667 is about 19535.2928567759. The cubic root of 381627667 is about 725.3483332869.

The spelling of 381627667 in words is "three hundred eighty-one million, six hundred twenty-seven thousand, six hundred sixty-seven".