163843 has 4 divisors (see below), whose sum is σ = 166680. Its totient is φ = 161008.

The previous prime is 163841. The next prime is 163847. The reversal of 163843 is 348361.

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 163843 - 2¹ = 163841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163841) 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, 1330 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (41670).

163843 is a Friedman number, since it can be written as 3+(8*4)^3*(6-1), using all its digits and the basic arithmetic operations.

2¹⁶³⁸⁴³ is an apocalyptic number.

163843 is a deficient number, since it is larger than the sum of its proper divisors (2837).

163843 is an equidigital number, since it uses as much as digits as its factorization.

163843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836.

The product of its digits is 1728, while the sum is 25.

The square root of 163843 is about 404.7752462787. The cubic root of 163843 is about 54.7195642713.

It can be divided in two parts, 1638 and 43, that added together give a square (1681 = 41²).

The spelling of 163843 in words is "one hundred sixty-three thousand, eight hundred forty-three".