163418 has 8 divisors (see below), whose sum is σ = 247860. Its totient is φ = 80800.

The previous prime is 163417. The next prime is 163433. The reversal of 163418 is 814361.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 38809 = 353^2 + 197^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 163393 and 163402.

It is not an unprimeable number, because it can be changed into a prime (163411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 606.

2¹⁶³⁴¹⁸ is an apocalyptic number.

163418 is a deficient number, since it is larger than the sum of its proper divisors (84442).

163418 is a wasteful number, since it uses less digits than its factorization.

163418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912.

The product of its digits is 576, while the sum is 23.

The square root of 163418 is about 404.2499226963. The cubic root of 163418 is about 54.6722100929.

Adding to 163418 its reverse (814361), we get a palindrome (977779).

The spelling of 163418 in words is "one hundred sixty-three thousand, four hundred eighteen".