180841 has 4 divisors (see below), whose sum is σ = 181972. Its totient is φ = 179712.

The previous prime is 180811. The next prime is 180847. The reversal of 180841 is 148081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 148081 = 373 ⋅397.

It can be written as a sum of positive squares in 2 ways, for example, as 24025 + 156816 = 155^2 + 396^2 .

It is a cyclic number.

It is not a de Polignac number, because 180841 - 2¹¹ = 178793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180847) 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, 276 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (45493).

2¹⁸⁰⁸⁴¹ is an apocalyptic number.

It is an amenable number.

180841 is a deficient number, since it is larger than the sum of its proper divisors (1131).

180841 is an equidigital number, since it uses as much as digits as its factorization.

180841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 180841 is about 425.2540417209. The cubic root of 180841 is about 56.5499597262.

It can be divided in two parts, 1808 and 41, that added together give a square (1849 = 43²).

The spelling of 180841 in words is "one hundred eighty thousand, eight hundred forty-one".