163984506 has 32 divisors (see below), whose sum is σ = 375822720. Its totient is φ = 46727616.

The previous prime is 163984501. The next prime is 163984507. The reversal of 163984506 is 605489361.

163984506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (163984501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11320 + ... + 21356.

It is an arithmetic number, because the mean of its divisors is an integer number (11744460).

Almost surely, 2^163984506 is an apocalyptic number.

163984506 is an abundant number, since it is smaller than the sum of its proper divisors (211838214).

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

163984506 is a wasteful number, since it uses less digits than its factorization.

163984506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10438.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 163984506 is about 12805.6435215104. The cubic root of 163984506 is about 547.3531292206.

The spelling of 163984506 in words is "one hundred sixty-three million, nine hundred eighty-four thousand, five hundred six".