163673118 has 48 divisors (see below), whose sum is σ = 418369536. Its totient is φ = 45254160.

The previous prime is 163673101. The next prime is 163673119. The reversal of 163673118 is 811376361.

163673118 is a `hidden beast` number, since 1 + 636 + 7 + 3 + 1 + 18 = 666.

163673118 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163673119) 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 23 ways as a sum of consecutive naturals, for example, 17046 + ... + 24857.

It is an arithmetic number, because the mean of its divisors is an integer number (8716032).

Almost surely, 2^163673118 is an apocalyptic number.

163673118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

163673118 is an abundant number, since it is smaller than the sum of its proper divisors (254696418).

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

163673118 is a wasteful number, since it uses less digits than its factorization.

163673118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41949 (or 41946 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 163673118 is about 12793.4795110634. The cubic root of 163673118 is about 547.0064558348.

The spelling of 163673118 in words is "one hundred sixty-three million, six hundred seventy-three thousand, one hundred eighteen".