381086843 has 2 divisors, whose sum is σ = 381086844. Its totient is φ = 381086842.

The previous prime is 381086833. The next prime is 381086863. The reversal of 381086843 is 348680183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381086843 - 2²⁸ = 112651387 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381086843.

It is not a weakly prime, because it can be changed into another prime (381086803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190543421 + 190543422.

It is an arithmetic number, because the mean of its divisors is an integer number (190543422).

Almost surely, 2^381086843 is an apocalyptic number.

381086843 is a deficient number, since it is larger than the sum of its proper divisors (1).

381086843 is an equidigital number, since it uses as much as digits as its factorization.

381086843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 381086843 is about 19521.4457200280. The cubic root of 381086843 is about 725.0055286142.

The spelling of 381086843 in words is "three hundred eighty-one million, eighty-six thousand, eight hundred forty-three".