206935189 has 2 divisors, whose sum is σ = 206935190. Its totient is φ = 206935188.

The previous prime is 206935171. The next prime is 206935249. The reversal of 206935189 is 981539602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202834564 + 4100625 = 14242^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 206935189 - 2¹³ = 206926997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206935129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103467594 + 103467595.

It is an arithmetic number, because the mean of its divisors is an integer number (103467595).

Almost surely, 2^206935189 is an apocalyptic number.

It is an amenable number.

206935189 is a deficient number, since it is larger than the sum of its proper divisors (1).

206935189 is an equidigital number, since it uses as much as digits as its factorization.

206935189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 206935189 is about 14385.2420556625. The cubic root of 206935189 is about 591.4864262818.

The spelling of 206935189 in words is "two hundred six million, nine hundred thirty-five thousand, one hundred eighty-nine".