11638843 has 4 divisors (see below), whose sum is σ = 11703328. Its totient is φ = 11574360.

The previous prime is 11638819. The next prime is 11638873. The reversal of 11638843 is 34883611.

11638843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11638843 - 2²¹ = 9541691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11638799 and 11638808.

It is not an unprimeable number, because it can be changed into a prime (11638873) 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, 31971 + ... + 32332.

It is an arithmetic number, because the mean of its divisors is an integer number (2925832).

Almost surely, 2^11638843 is an apocalyptic number.

11638843 is a deficient number, since it is larger than the sum of its proper divisors (64485).

11638843 is an equidigital number, since it uses as much as digits as its factorization.

11638843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64484.

The product of its digits is 13824, while the sum is 34.

The square root of 11638843 is about 3411.5748562797. The cubic root of 11638843 is about 226.6226272091.

The spelling of 11638843 in words is "eleven million, six hundred thirty-eight thousand, eight hundred forty-three".