381912847 has 2 divisors, whose sum is σ = 381912848. Its totient is φ = 381912846.

The previous prime is 381912833. The next prime is 381912851. The reversal of 381912847 is 748219183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381912847 - 2⁷ = 381912719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381912857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190956423 + 190956424.

It is an arithmetic number, because the mean of its divisors is an integer number (190956424).

Almost surely, 2^381912847 is an apocalyptic number.

381912847 is a deficient number, since it is larger than the sum of its proper divisors (1).

381912847 is an equidigital number, since it uses as much as digits as its factorization.

381912847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 381912847 is about 19542.5905908096. The cubic root of 381912847 is about 725.5289660094.

The spelling of 381912847 in words is "three hundred eighty-one million, nine hundred twelve thousand, eight hundred forty-seven".