163803 has 4 divisors (see below), whose sum is σ = 218408. Its totient is φ = 109200.

The previous prime is 163789. The next prime is 163811. The reversal of 163803 is 308361.

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

It is not a de Polignac number, because 163803 - 2⁵ = 163771 is a prime.

It is a D-number.

It is a Duffinian number.

163803 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 163803.

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, 27298 + ... + 27303.

It is an arithmetic number, because the mean of its divisors is an integer number (54602).

2¹⁶³⁸⁰³ is an apocalyptic number.

163803 is a deficient number, since it is larger than the sum of its proper divisors (54605).

163803 is an equidigital number, since it uses as much as digits as its factorization.

163803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54604.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 163803 is about 404.7258331266. The cubic root of 163803 is about 54.7151109009.

The spelling of 163803 in words is "one hundred sixty-three thousand, eight hundred three".