163968219 has 40 divisors (see below), whose sum is σ = 257317632. Its totient is φ = 103854960.

The previous prime is 163968199. The next prime is 163968221. The reversal of 163968219 is 912869361.

It is a happy number.

163968219 is a `hidden beast` number, since 1 + 639 + 6 + 8 + 2 + 1 + 9 = 666.

It is not a de Polignac number, because 163968219 - 2⁵ = 163968187 is a prime.

It is a super-2 number, since 2×163968219² = 53771153684063922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163968319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 527074 + ... + 527384.

Almost surely, 2^163968219 is an apocalyptic number.

163968219 is a deficient number, since it is larger than the sum of its proper divisors (93349413).

163968219 is a wasteful number, since it uses less digits than its factorization.

163968219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 620 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 163968219 is about 12805.0075751637. The cubic root of 163968219 is about 547.3350075175.

The spelling of 163968219 in words is "one hundred sixty-three million, nine hundred sixty-eight thousand, two hundred nineteen".