181073 has 4 divisors (see below), whose sum is σ = 185328. Its totient is φ = 176820.

The previous prime is 181063. The next prime is 181081. The reversal of 181073 is 370181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370181 = 7 ⋅52883.

It is a cyclic number.

It is not a de Polignac number, because 181073 - 2¹² = 176977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (181003) 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, 2063 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (46332).

2¹⁸¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

181073 is a deficient number, since it is larger than the sum of its proper divisors (4255).

181073 is an equidigital number, since it uses as much as digits as its factorization.

181073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 181073 is about 425.5267324153. The cubic root of 181073 is about 56.5741319443.

The spelling of 181073 in words is "one hundred eighty-one thousand, seventy-three".