163170128 has 40 divisors (see below), whose sum is σ = 348269376. Its totient is φ = 73440000.

The previous prime is 163170127. The next prime is 163170169. The reversal of 163170128 is 821071361.

163170128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 163170128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163170127) 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, 13628 + ... + 22628.

Almost surely, 2^163170128 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 163170128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174134688).

163170128 is an abundant number, since it is smaller than the sum of its proper divisors (185099248).

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

163170128 is a wasteful number, since it uses less digits than its factorization.

163170128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123 (or 9117 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 163170128 is about 12773.8063238801. The cubic root of 163170128 is about 546.4455388290.

The spelling of 163170128 in words is "one hundred sixty-three million, one hundred seventy thousand, one hundred twenty-eight".