163893171 has 8 divisors (see below), whose sum is σ = 235333840. Its totient is φ = 100857312.

The previous prime is 163893161. The next prime is 163893173. The reversal of 163893171 is 171398361.

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

It is not a de Polignac number, because 163893171 - 2⁵ = 163893139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4202389 = 163893171 / (1 + 6 + 3 + 8 + 9 + 3 + 1 + 7 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163893173) 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, 2101156 + ... + 2101233.

It is an arithmetic number, because the mean of its divisors is an integer number (29416730).

Almost surely, 2^163893171 is an apocalyptic number.

163893171 is a deficient number, since it is larger than the sum of its proper divisors (71440669).

163893171 is a wasteful number, since it uses less digits than its factorization.

163893171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202405.

The product of its digits is 27216, while the sum is 39.

The square root of 163893171 is about 12802.0768237033. The cubic root of 163893171 is about 547.2514899790.

The spelling of 163893171 in words is "one hundred sixty-three million, eight hundred ninety-three thousand, one hundred seventy-one".