1163863 has 4 divisors (see below), whose sum is σ = 1166040. Its totient is φ = 1161688.

The previous prime is 1163849. The next prime is 1163873. The reversal of 1163863 is 3683611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1163863 - 2⁵ = 1163831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (291510).

2^1163863 is an apocalyptic number.

1163863 is a deficient number, since it is larger than the sum of its proper divisors (2177).

1163863 is an equidigital number, since it uses as much as digits as its factorization.

1163863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176.

The product of its digits is 2592, while the sum is 28.

The square root of 1163863 is about 1078.8248235928. The cubic root of 1163863 is about 105.1882639059.

The spelling of 1163863 in words is "one million, one hundred sixty-three thousand, eight hundred sixty-three".