213819163 has 2 divisors, whose sum is σ = 213819164. Its totient is φ = 213819162.

The previous prime is 213819157. The next prime is 213819167. The reversal of 213819163 is 361918312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213819163 is a prime.

It is not a weakly prime, because it can be changed into another prime (213819167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106909581 + 106909582.

It is an arithmetic number, because the mean of its divisors is an integer number (106909582).

Almost surely, 2^213819163 is an apocalyptic number.

213819163 is a deficient number, since it is larger than the sum of its proper divisors (1).

213819163 is an equidigital number, since it uses as much as digits as its factorization.

213819163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 213819163 is about 14622.5566505998. The cubic root of 213819163 is about 597.9738721932.

The spelling of 213819163 in words is "two hundred thirteen million, eight hundred nineteen thousand, one hundred sixty-three".