4011863 has 2 divisors, whose sum is σ = 4011864. Its totient is φ = 4011862.

The previous prime is 4011859. The next prime is 4011871. The reversal of 4011863 is 3681104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4011863 - 2² = 4011859 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4011883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2005931 + 2005932.

It is an arithmetic number, because the mean of its divisors is an integer number (2005932).

Almost surely, 2^4011863 is an apocalyptic number.

4011863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4011863 is an equidigital number, since it uses as much as digits as its factorization.

4011863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4011863 is about 2002.9635543364. The cubic root of 4011863 is about 158.8968781380.

Adding to 4011863 its reverse (3681104), we get a palindrome (7692967).

The spelling of 4011863 in words is "four million, eleven thousand, eight hundred sixty-three".