163913271 has 4 divisors (see below), whose sum is σ = 218551032. Its totient is φ = 109275512.

The previous prime is 163913263. The next prime is 163913279. The reversal of 163913271 is 172319361.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (163913263) and next prime (163913279).

It is a cyclic number.

It is not a de Polignac number, because 163913271 - 2³ = 163913263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163913279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27318876 + ... + 27318881.

It is an arithmetic number, because the mean of its divisors is an integer number (54637758).

Almost surely, 2^163913271 is an apocalyptic number.

163913271 is a deficient number, since it is larger than the sum of its proper divisors (54637761).

163913271 is an equidigital number, since it uses as much as digits as its factorization.

163913271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54637760.

The product of its digits is 6804, while the sum is 33.

The square root of 163913271 is about 12802.8618285132. The cubic root of 163913271 is about 547.2738608630.

The spelling of 163913271 in words is "one hundred sixty-three million, nine hundred thirteen thousand, two hundred seventy-one".