218963 has 2 divisors, whose sum is σ = 218964. Its totient is φ = 218962.

The previous prime is 218947. The next prime is 218969. The reversal of 218963 is 369812.

218963 is nontrivially palindromic in base 16.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218963 - 2⁴ = 218947 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 218963.

It is not a weakly prime, because it can be changed into another prime (218969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109481 + 109482.

It is an arithmetic number, because the mean of its divisors is an integer number (109482).

2²¹⁸⁹⁶³ is an apocalyptic number.

218963 is a deficient number, since it is larger than the sum of its proper divisors (1).

218963 is an equidigital number, since it uses as much as digits as its factorization.

218963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 218963 is about 467.9348245215. The cubic root of 218963 is about 60.2731068432.

The spelling of 218963 in words is "two hundred eighteen thousand, nine hundred sixty-three".