216088189 has 2 divisors, whose sum is σ = 216088190. Its totient is φ = 216088188.

The previous prime is 216088183. The next prime is 216088211. The reversal of 216088189 is 981880612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204919225 + 11168964 = 14315^2 + 3342^2 .

It is a cyclic number.

It is not a de Polignac number, because 216088189 - 2³ = 216088181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216088181) 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, 108044094 + 108044095.

It is an arithmetic number, because the mean of its divisors is an integer number (108044095).

Almost surely, 2^216088189 is an apocalyptic number.

It is an amenable number.

216088189 is a deficient number, since it is larger than the sum of its proper divisors (1).

216088189 is an equidigital number, since it uses as much as digits as its factorization.

216088189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 216088189 is about 14699.9384012315. The cubic root of 216088189 is about 600.0816453710.

The spelling of 216088189 in words is "two hundred sixteen million, eighty-eight thousand, one hundred eighty-nine".