163013173 has 4 divisors (see below), whose sum is σ = 163432620. Its totient is φ = 162593728.

The previous prime is 163013143. The next prime is 163013189. The reversal of 163013173 is 371310361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371310361 = 401 ⋅925961.

It can be written as a sum of positive squares in 2 ways, for example, as 71944324 + 91068849 = 8482^2 + 9543^2 .

It is a cyclic number.

It is not a de Polignac number, because 163013173 - 2¹³ = 163004981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163013143) 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, 209140 + ... + 209917.

It is an arithmetic number, because the mean of its divisors is an integer number (40858155).

Almost surely, 2^163013173 is an apocalyptic number.

It is an amenable number.

163013173 is a deficient number, since it is larger than the sum of its proper divisors (419447).

163013173 is an equidigital number, since it uses as much as digits as its factorization.

163013173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419446.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 163013173 is about 12767.6612188764. The cubic root of 163013173 is about 546.2702721192.

The spelling of 163013173 in words is "one hundred sixty-three million, thirteen thousand, one hundred seventy-three".