381943 has 2 divisors, whose sum is σ = 381944. Its totient is φ = 381942.

The previous prime is 381937. The next prime is 381949. The reversal of 381943 is 349183.

It is a balanced prime because it is at equal distance from previous prime (381937) and next prime (381949).

It is an emirp because it is prime and its reverse (349183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381943 - 2⁵ = 381911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190971 + 190972.

It is an arithmetic number, because the mean of its divisors is an integer number (190972).

2³⁸¹⁹⁴³ is an apocalyptic number.

381943 is a deficient number, since it is larger than the sum of its proper divisors (1).

381943 is an equidigital number, since it uses as much as digits as its factorization.

381943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 381943 is about 618.0153719771. The cubic root of 381943 is about 72.5548059632.

The spelling of 381943 in words is "three hundred eighty-one thousand, nine hundred forty-three".