218433041 has 4 divisors (see below), whose sum is σ = 218541492. Its totient is φ = 218324592.

The previous prime is 218433011. The next prime is 218433091. The reversal of 218433041 is 140334812.

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 182385025 + 36048016 = 13505^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 218433041 - 2¹⁰ = 218432017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 218433041.

It is not an unprimeable number, because it can be changed into a prime (218433011) 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, 51146 + ... + 55251.

It is an arithmetic number, because the mean of its divisors is an integer number (54635373).

Almost surely, 2^218433041 is an apocalyptic number.

It is an amenable number.

218433041 is a deficient number, since it is larger than the sum of its proper divisors (108451).

218433041 is a wasteful number, since it uses less digits than its factorization.

218433041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108450.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 218433041 is about 14779.4804035866. The cubic root of 218433041 is about 602.2444096478.

Adding to 218433041 its reverse (140334812), we get a palindrome (358767853).

The spelling of 218433041 in words is "two hundred eighteen million, four hundred thirty-three thousand, forty-one".