163441664 has 44 divisors (see below), whose sum is σ = 328813704. Its totient is φ = 81199104.

The previous prime is 163441661. The next prime is 163441673. The reversal of 163441664 is 466144361.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (163441661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197219 + ... + 198045.

Almost surely, 2^163441664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163441664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164406852).

163441664 is an abundant number, since it is smaller than the sum of its proper divisors (165372040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163441664 is an equidigital number, since it uses as much as digits as its factorization.

163441664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1022 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 163441664 is about 12784.4305309232. The cubic root of 163441664 is about 546.7484893058.

The spelling of 163441664 in words is "one hundred sixty-three million, four hundred forty-one thousand, six hundred sixty-four".