218898941 has 2 divisors, whose sum is σ = 218898942. Its totient is φ = 218898940.

The previous prime is 218898937. The next prime is 218898997. The reversal of 218898941 is 149898812.

It is a happy number.

218898941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135815716 + 83083225 = 11654^2 + 9115^2 .

It is a cyclic number.

It is not a de Polignac number, because 218898941 - 2² = 218898937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218898941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218891941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109449470 + 109449471.

It is an arithmetic number, because the mean of its divisors is an integer number (109449471).

Almost surely, 2^218898941 is an apocalyptic number.

It is an amenable number.

218898941 is a deficient number, since it is larger than the sum of its proper divisors (1).

218898941 is an equidigital number, since it uses as much as digits as its factorization.

218898941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 50.

The square root of 218898941 is about 14795.2337257645. The cubic root of 218898941 is about 602.6722851139.

The spelling of 218898941 in words is "two hundred eighteen million, eight hundred ninety-eight thousand, nine hundred forty-one".