163443 has 16 divisors (see below), whose sum is σ = 256256. Its totient is φ = 90720.

The previous prime is 163433. The next prime is 163469. The reversal of 163443 is 344361.

It is not a de Polignac number, because 163443 - 2⁵ = 163411 is a prime.

It is a super-2 number, since 2×163443² = 53427228498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (163403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813 + ... + 993.

It is an arithmetic number, because the mean of its divisors is an integer number (16016).

2¹⁶³⁴⁴³ is an apocalyptic number.

163443 is a deficient number, since it is larger than the sum of its proper divisors (92813).

163443 is a wasteful number, since it uses less digits than its factorization.

163443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 864, while the sum is 21.

The square root of 163443 is about 404.2808429792. The cubic root of 163443 is about 54.6749979040.

It can be divided in two parts, 163 and 443, that added together give a palindrome (606).

The spelling of 163443 in words is "one hundred sixty-three thousand, four hundred forty-three".