180449 has 4 divisors (see below), whose sum is σ = 185364. Its totient is φ = 175536.

The previous prime is 180437. The next prime is 180463. The reversal of 180449 is 944081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944081 = 23 ⋅41047.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 70225 = 332^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 180449 - 2¹² = 176353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2402 + ... + 2475.

It is an arithmetic number, because the mean of its divisors is an integer number (46341).

2¹⁸⁰⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

180449 is a deficient number, since it is larger than the sum of its proper divisors (4915).

180449 is an equidigital number, since it uses as much as digits as its factorization.

180449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 180449 is about 424.7928907126. The cubic root of 180449 is about 56.5090699930.

The spelling of 180449 in words is "one hundred eighty thousand, four hundred forty-nine".