216493363 has 2 divisors, whose sum is σ = 216493364. Its totient is φ = 216493362.

The previous prime is 216493357. The next prime is 216493373. The reversal of 216493363 is 363394612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216493363 - 2²¹ = 214396211 is a prime.

It is not a weakly prime, because it can be changed into another prime (216493373) 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 as a sum of consecutive naturals, namely, 108246681 + 108246682.

It is an arithmetic number, because the mean of its divisors is an integer number (108246682).

Almost surely, 2^216493363 is an apocalyptic number.

216493363 is a deficient number, since it is larger than the sum of its proper divisors (1).

216493363 is an equidigital number, since it uses as much as digits as its factorization.

216493363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 216493363 is about 14713.7134333927. The cubic root of 216493363 is about 600.4564702294.

The spelling of 216493363 in words is "two hundred sixteen million, four hundred ninety-three thousand, three hundred sixty-three".