163191168 has 240 divisors, whose sum is σ = 557118900. Its totient is φ = 45835776.

The previous prime is 163191139. The next prime is 163191173. The reversal of 163191168 is 861191361.

It is a happy number.

163191168 is a `hidden beast` number, since 1 + 631 + 9 + 1 + 16 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2765923 + ... + 2765981.

Almost surely, 2^163191168 is an apocalyptic number.

163191168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163191168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278559450).

163191168 is an abundant number, since it is smaller than the sum of its proper divisors (393927732).

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

163191168 is an frugal number, since it uses more digits than its factorization.

163191168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 71 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 163191168 is about 12774.6298576515. The cubic root of 163191168 is about 546.4690249906.

The spelling of 163191168 in words is "one hundred sixty-three million, one hundred ninety-one thousand, one hundred sixty-eight".