3821863 has 2 divisors, whose sum is σ = 3821864. Its totient is φ = 3821862.

The previous prime is 3821837. The next prime is 3821893. The reversal of 3821863 is 3681283.

3821863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3681283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3821863 - 2⁹ = 3821351 is a prime.

3821863 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3821803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910931 + 1910932.

It is an arithmetic number, because the mean of its divisors is an integer number (1910932).

Almost surely, 2^3821863 is an apocalyptic number.

3821863 is a deficient number, since it is larger than the sum of its proper divisors (1).

3821863 is an equidigital number, since it uses as much as digits as its factorization.

3821863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 3821863 is about 1954.9585673359. The cubic root of 3821863 is about 156.3477749636.

The spelling of 3821863 in words is "three million, eight hundred twenty-one thousand, eight hundred sixty-three".