206737344389 has 2 divisors, whose sum is σ = 206737344390. Its totient is φ = 206737344388.

The previous prime is 206737344379. The next prime is 206737344421. The reversal of 206737344389 is 983443737602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167391448225 + 39345896164 = 409135^2 + 198358^2 .

It is a cyclic number.

It is not a de Polignac number, because 206737344389 - 2²⁰ = 206736295813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206737344379) 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, 103368672194 + 103368672195.

It is an arithmetic number, because the mean of its divisors is an integer number (103368672195).

Almost surely, 2^206737344389 is an apocalyptic number.

It is an amenable number.

206737344389 is a deficient number, since it is larger than the sum of its proper divisors (1).

206737344389 is an equidigital number, since it uses as much as digits as its factorization.

206737344389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 56.

The spelling of 206737344389 in words is "two hundred six billion, seven hundred thirty-seven million, three hundred forty-four thousand, three hundred eighty-nine".