181003441 has 4 divisors (see below), whose sum is σ = 182324772. Its totient is φ = 179682112.

The previous prime is 181003429. The next prime is 181003489. The reversal of 181003441 is 144300181.

181003441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75325041 + 105678400 = 8679^2 + 10280^2 .

It is a cyclic number.

It is not a de Polignac number, because 181003441 - 2⁹ = 181002929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181003411) 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, 660460 + ... + 660733.

It is an arithmetic number, because the mean of its divisors is an integer number (45581193).

Almost surely, 2^181003441 is an apocalyptic number.

It is an amenable number.

181003441 is a deficient number, since it is larger than the sum of its proper divisors (1321331).

181003441 is a wasteful number, since it uses less digits than its factorization.

181003441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321330.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 181003441 is about 13453.7519302238. The cubic root of 181003441 is about 565.6688671898.

The spelling of 181003441 in words is "one hundred eighty-one million, three thousand, four hundred forty-one".