163444163 has 8 divisors (see below), whose sum is σ = 167634096. Its totient is φ = 159264000.

The previous prime is 163444157. The next prime is 163444189. The reversal of 163444163 is 361444361.

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

It is a cyclic number.

It is not a de Polignac number, because 163444163 - 2²⁰ = 162395587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163444063) 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, 41195 + ... + 44987.

It is an arithmetic number, because the mean of its divisors is an integer number (20954262).

Almost surely, 2^163444163 is an apocalyptic number.

163444163 is a deficient number, since it is larger than the sum of its proper divisors (4189933).

163444163 is a wasteful number, since it uses less digits than its factorization.

163444163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885.

The product of its digits is 20736, while the sum is 32.

The square root of 163444163 is about 12784.5282666198. The cubic root of 163444163 is about 546.7512758608.

The spelling of 163444163 in words is "one hundred sixty-three million, four hundred forty-four thousand, one hundred sixty-three".