219314189 has 2 divisors, whose sum is σ = 219314190. Its totient is φ = 219314188.

The previous prime is 219314167. The next prime is 219314197. The reversal of 219314189 is 981413912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133010089 + 86304100 = 11533^2 + 9290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219314189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219314489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109657094 + 109657095.

It is an arithmetic number, because the mean of its divisors is an integer number (109657095).

Almost surely, 2^219314189 is an apocalyptic number.

It is an amenable number.

219314189 is a deficient number, since it is larger than the sum of its proper divisors (1).

219314189 is an equidigital number, since it uses as much as digits as its factorization.

219314189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 38.

The square root of 219314189 is about 14809.2602448603. The cubic root of 219314189 is about 603.0531311502.

The spelling of 219314189 in words is "two hundred nineteen million, three hundred fourteen thousand, one hundred eighty-nine".