1113863 has 2 divisors, whose sum is σ = 1113864. Its totient is φ = 1113862.

The previous prime is 1113859. The next prime is 1113877. The reversal of 1113863 is 3683111.

It is a weak prime.

It is an emirp because it is prime and its reverse (3683111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1113863 - 2² = 1113859 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556931 + 556932.

It is an arithmetic number, because the mean of its divisors is an integer number (556932).

2^1113863 is an apocalyptic number.

1113863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113863 is an equidigital number, since it uses as much as digits as its factorization.

1113863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 1113863 is about 1055.3970816712. The cubic root of 1113863 is about 103.6598539560.

Adding to 1113863 its reverse (3683111), we get a palindrome (4796974).

The spelling of 1113863 in words is "one million, one hundred thirteen thousand, eight hundred sixty-three".