163968771 has 8 divisors (see below), whose sum is σ = 228130560. Its totient is φ = 104559752.

The previous prime is 163968769. The next prime is 163968773. The reversal of 163968771 is 177869361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163968769) and next prime (163968773).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163968771 - 2¹ = 163968769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163968771.

It is not an unprimeable number, because it can be changed into a prime (163968773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1188111 + ... + 1188248.

It is an arithmetic number, because the mean of its divisors is an integer number (28516320).

Almost surely, 2^163968771 is an apocalyptic number.

163968771 is a deficient number, since it is larger than the sum of its proper divisors (64161789).

163968771 is a wasteful number, since it uses less digits than its factorization.

163968771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376385.

The product of its digits is 381024, while the sum is 48.

The square root of 163968771 is about 12805.0291292133. The cubic root of 163968771 is about 547.3356217190.

The spelling of 163968771 in words is "one hundred sixty-three million, nine hundred sixty-eight thousand, seven hundred seventy-one".