163923 has 8 divisors (see below), whose sum is σ = 221136. Its totient is φ = 108000.

The previous prime is 163909. The next prime is 163927. The reversal of 163923 is 329361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163923 - 2⁶ = 163859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163893 and 163902.

It is not an unprimeable number, because it can be changed into a prime (163927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (27642).

2¹⁶³⁹²³ is an apocalyptic number.

163923 is a deficient number, since it is larger than the sum of its proper divisors (57213).

163923 is a wasteful number, since it uses less digits than its factorization.

163923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its digits is 972, while the sum is 24.

The square root of 163923 is about 404.8740544910. The cubic root of 163923 is about 54.7284688382.

The spelling of 163923 in words is "one hundred sixty-three thousand, nine hundred twenty-three".