163444423 has 8 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 160347000.

The previous prime is 163444297. The next prime is 163444451. The reversal of 163444423 is 324444361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163444423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163444453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11958 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (20820240).

Almost surely, 2^163444423 is an apocalyptic number.

163444423 is a deficient number, since it is larger than the sum of its proper divisors (3117497).

163444423 is an equidigital number, since it uses as much as digits as its factorization.

163444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10037.

The product of its digits is 27648, while the sum is 31.

The square root of 163444423 is about 12784.5384351567. The cubic root of 163444423 is about 546.7515657768.

Adding to 163444423 its reverse (324444361), we get a palindrome (487888784).

The spelling of 163444423 in words is "one hundred sixty-three million, four hundred forty-four thousand, four hundred twenty-three".