163893 has 4 divisors (see below), whose sum is σ = 218528. Its totient is φ = 109260.

The previous prime is 163883. The next prime is 163901. The reversal of 163893 is 398361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 163893 - 2⁵ = 163861 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163893.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 163893.

It is not an unprimeable number, because it can be changed into a prime (163853) 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, 27313 + ... + 27318.

It is an arithmetic number, because the mean of its divisors is an integer number (54632).

2¹⁶³⁸⁹³ is an apocalyptic number.

It is an amenable number.

163893 is a deficient number, since it is larger than the sum of its proper divisors (54635).

163893 is an equidigital number, since it uses as much as digits as its factorization.

163893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54634.

The product of its digits is 3888, while the sum is 30.

The square root of 163893 is about 404.8370042375. The cubic root of 163893 is about 54.7251299652.

The spelling of 163893 in words is "one hundred sixty-three thousand, eight hundred ninety-three".