3851863 has 2 divisors, whose sum is σ = 3851864. Its totient is φ = 3851862.

The previous prime is 3851857. The next prime is 3851873. The reversal of 3851863 is 3681583.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3851863 is a prime.

3851863 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3851873) 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, 1925931 + 1925932.

It is an arithmetic number, because the mean of its divisors is an integer number (1925932).

Almost surely, 2^3851863 is an apocalyptic number.

3851863 is a deficient number, since it is larger than the sum of its proper divisors (1).

3851863 is an equidigital number, since it uses as much as digits as its factorization.

3851863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 3851863 is about 1962.6163659768. The cubic root of 3851863 is about 156.7557970769.

The spelling of 3851863 in words is "three million, eight hundred fifty-one thousand, eight hundred sixty-three".