206914189 has 2 divisors, whose sum is σ = 206914190. Its totient is φ = 206914188.

The previous prime is 206914153. The next prime is 206914207. The reversal of 206914189 is 981419602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162358564 + 44555625 = 12742^2 + 6675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206914189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206914889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103457094 + 103457095.

It is an arithmetic number, because the mean of its divisors is an integer number (103457095).

Almost surely, 2^206914189 is an apocalyptic number.

It is an amenable number.

206914189 is a deficient number, since it is larger than the sum of its proper divisors (1).

206914189 is an equidigital number, since it uses as much as digits as its factorization.

206914189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 206914189 is about 14384.5121224183. The cubic root of 206914189 is about 591.4664173840.

The spelling of 206914189 in words is "two hundred six million, nine hundred fourteen thousand, one hundred eighty-nine".