11881863 has 32 divisors (see below), whose sum is σ = 20544000. Its totient is φ = 6784344.

The previous prime is 11881853. The next prime is 11881867. The reversal of 11881863 is 36818811.

11881863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11881863 - 2⁶ = 11881799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881867) 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 in 31 ways as a sum of consecutive naturals, for example, 8620 + ... + 9902.

It is an arithmetic number, because the mean of its divisors is an integer number (642000).

Almost surely, 2^11881863 is an apocalyptic number.

11881863 is a deficient number, since it is larger than the sum of its proper divisors (8662137).

11881863 is an equidigital number, since it uses as much as digits as its factorization.

11881863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1293 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 11881863 is about 3447.0078328893. The cubic root of 11881863 is about 228.1890744641.

The spelling of 11881863 in words is "eleven million, eight hundred eighty-one thousand, eight hundred sixty-three".