381886847 has 2 divisors, whose sum is σ = 381886848. Its totient is φ = 381886846.

The previous prime is 381886823. The next prime is 381886849. The reversal of 381886847 is 748688183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381886847 - 2¹⁶ = 381821311 is a prime.

Together with 381886849, 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 (381886849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190943423 + 190943424.

It is an arithmetic number, because the mean of its divisors is an integer number (190943424).

Almost surely, 2^381886847 is an apocalyptic number.

381886847 is a deficient number, since it is larger than the sum of its proper divisors (1).

381886847 is an equidigital number, since it uses as much as digits as its factorization.

381886847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 53.

The square root of 381886847 is about 19541.9253657361. The cubic root of 381886847 is about 725.5125013619.

The spelling of 381886847 in words is "three hundred eighty-one million, eight hundred eighty-six thousand, eight hundred forty-seven".