4001863 has 2 divisors, whose sum is σ = 4001864. Its totient is φ = 4001862.

The previous prime is 4001849. The next prime is 4001867. The reversal of 4001863 is 3681004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4001863 - 2⁵ = 4001831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000931 + 2000932.

It is an arithmetic number, because the mean of its divisors is an integer number (2000932).

Almost surely, 2^4001863 is an apocalyptic number.

4001863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001863 is an equidigital number, since it uses as much as digits as its factorization.

4001863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4001863 is about 2000.4656957819. The cubic root of 4001863 is about 158.7647457731.

Adding to 4001863 its reverse (3681004), we get a palindrome (7682867).

The spelling of 4001863 in words is "four million, one thousand, eight hundred sixty-three".