381846841 has 2 divisors, whose sum is σ = 381846842. Its totient is φ = 381846840.

The previous prime is 381846827. The next prime is 381846887. The reversal of 381846841 is 148648183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296838441 + 85008400 = 17229^2 + 9220^2 .

It is an emirp because it is prime and its reverse (148648183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381846841 - 2¹⁹ = 381322553 is a prime.

It is not a weakly prime, because it can be changed into another prime (381846041) 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, 190923420 + 190923421.

It is an arithmetic number, because the mean of its divisors is an integer number (190923421).

Almost surely, 2^381846841 is an apocalyptic number.

It is an amenable number.

381846841 is a deficient number, since it is larger than the sum of its proper divisors (1).

381846841 is an equidigital number, since it uses as much as digits as its factorization.

381846841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 43.

The square root of 381846841 is about 19540.9017448019. The cubic root of 381846841 is about 725.4871658758.

The spelling of 381846841 in words is "three hundred eighty-one million, eight hundred forty-six thousand, eight hundred forty-one".