216146863 has 2 divisors, whose sum is σ = 216146864. Its totient is φ = 216146862.

The previous prime is 216146837. The next prime is 216146867. The reversal of 216146863 is 368641612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216146863 - 2⁹ = 216146351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216146867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108073431 + 108073432.

It is an arithmetic number, because the mean of its divisors is an integer number (108073432).

Almost surely, 2^216146863 is an apocalyptic number.

216146863 is a deficient number, since it is larger than the sum of its proper divisors (1).

216146863 is an equidigital number, since it uses as much as digits as its factorization.

216146863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 216146863 is about 14701.9339884248. The cubic root of 216146863 is about 600.1359534514.

The spelling of 216146863 in words is "two hundred sixteen million, one hundred forty-six thousand, eight hundred sixty-three".