181163 has 4 divisors (see below), whose sum is σ = 187440. Its totient is φ = 174888.

The previous prime is 181157. The next prime is 181183. The reversal of 181163 is 361181.

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

It is a cyclic number.

It is not a de Polignac number, because 181163 - 2⁸ = 180907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181123) 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, 3095 + ... + 3152.

It is an arithmetic number, because the mean of its divisors is an integer number (46860).

2¹⁸¹¹⁶³ is an apocalyptic number.

181163 is a deficient number, since it is larger than the sum of its proper divisors (6277).

181163 is an equidigital number, since it uses as much as digits as its factorization.

181163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276.

The product of its digits is 144, while the sum is 20.

The square root of 181163 is about 425.6324705659. The cubic root of 181163 is about 56.5835035394.

The spelling of 181163 in words is "one hundred eighty-one thousand, one hundred sixty-three".