163488906 has 96 divisors (see below), whose sum is σ = 417830400. Its totient is φ = 45239040.

The previous prime is 163488893. The next prime is 163488907. The reversal of 163488906 is 609884361.

163488906 is a `hidden beast` number, since 1 + 634 + 8 + 8 + 9 + 0 + 6 = 666.

163488906 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163488907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 683935 + ... + 684173.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^163488906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163488906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208915200).

163488906 is an abundant number, since it is smaller than the sum of its proper divisors (254341494).

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

163488906 is a wasteful number, since it uses less digits than its factorization.

163488906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 163488906 is about 12786.2780354566. The cubic root of 163488906 is about 546.8011625416.

The spelling of 163488906 in words is "one hundred sixty-three million, four hundred eighty-eight thousand, nine hundred six".