218016943 has 2 divisors, whose sum is σ = 218016944. Its totient is φ = 218016942.

The previous prime is 218016899. The next prime is 218016961. The reversal of 218016943 is 349610812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218016943 - 2²⁵ = 184462511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218016899 and 218016908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218016343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109008471 + 109008472.

It is an arithmetic number, because the mean of its divisors is an integer number (109008472).

Almost surely, 2^218016943 is an apocalyptic number.

218016943 is a deficient number, since it is larger than the sum of its proper divisors (1).

218016943 is an equidigital number, since it uses as much as digits as its factorization.

218016943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 218016943 is about 14765.3968114643. The cubic root of 218016943 is about 601.8617569415.

The spelling of 218016943 in words is "two hundred eighteen million, sixteen thousand, nine hundred forty-three".