181344241 has 4 divisors (see below), whose sum is σ = 195293812. Its totient is φ = 167394672.

The previous prime is 181344223. The next prime is 181344329. The reversal of 181344241 is 142443181.

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 15681600 + 165662641 = 3960^2 + 12871^2 .

It is a cyclic number.

It is not a de Polignac number, because 181344241 - 2¹⁹ = 180819953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181344041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974766 + ... + 6974791.

It is an arithmetic number, because the mean of its divisors is an integer number (48823453).

Almost surely, 2^181344241 is an apocalyptic number.

It is an amenable number.

181344241 is a deficient number, since it is larger than the sum of its proper divisors (13949571).

181344241 is a wasteful number, since it uses less digits than its factorization.

181344241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949570.

The product of its digits is 3072, while the sum is 28.

The square root of 181344241 is about 13466.4115858680. The cubic root of 181344241 is about 566.0236653900.

The spelling of 181344241 in words is "one hundred eighty-one million, three hundred forty-four thousand, two hundred forty-one".