163642233 has 8 divisors (see below), whose sum is σ = 218259328. Its totient is φ = 109059984.

The previous prime is 163642169. The next prime is 163642249. The reversal of 163642233 is 332246361.

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

It is not a de Polignac number, because 163642233 - 2⁶ = 163642169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 163642233.

It is not an unprimeable number, because it can be changed into a prime (163622233) 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, 5616 + ... + 18942.

It is an arithmetic number, because the mean of its divisors is an integer number (27282416).

Almost surely, 2^163642233 is an apocalyptic number.

It is an amenable number.

163642233 is a deficient number, since it is larger than the sum of its proper divisors (54617095).

163642233 is a wasteful number, since it uses less digits than its factorization.

163642233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17423.

The product of its digits is 15552, while the sum is 30.

The square root of 163642233 is about 12792.2723939103. The cubic root of 163642233 is about 546.9720470951.

Adding to 163642233 its reverse (332246361), we get a palindrome (495888594).

The spelling of 163642233 in words is "one hundred sixty-three million, six hundred forty-two thousand, two hundred thirty-three".