218074441 has 16 divisors (see below), whose sum is σ = 239597568. Its totient is φ = 197265600.

The previous prime is 218074427. The next prime is 218074471. The reversal of 218074441 is 144470812.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 218074441 - 2⁹ = 218073929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218074471) 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 15 ways as a sum of consecutive naturals, for example, 175675 + ... + 176911.

It is an arithmetic number, because the mean of its divisors is an integer number (14974848).

Almost surely, 2^218074441 is an apocalyptic number.

It is an amenable number.

218074441 is a deficient number, since it is larger than the sum of its proper divisors (21523127).

218074441 is a wasteful number, since it uses less digits than its factorization.

218074441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 218074441 is about 14767.3437354184. The cubic root of 218074441 is about 601.9146623183.

The spelling of 218074441 in words is "two hundred eighteen million, seventy-four thousand, four hundred forty-one".