206298640949 has 2 divisors, whose sum is σ = 206298640950. Its totient is φ = 206298640948.

The previous prime is 206298640897. The next prime is 206298640963. The reversal of 206298640949 is 949046892602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205441908049 + 856732900 = 453257^2 + 29270^2 .

It is a cyclic number.

It is not a de Polignac number, because 206298640949 - 2⁸ = 206298640693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206298640969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103149320474 + 103149320475.

It is an arithmetic number, because the mean of its divisors is an integer number (103149320475).

Almost surely, 2^206298640949 is an apocalyptic number.

It is an amenable number.

206298640949 is a deficient number, since it is larger than the sum of its proper divisors (1).

206298640949 is an equidigital number, since it uses as much as digits as its factorization.

206298640949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 206298640949 in words is "two hundred six billion, two hundred ninety-eight million, six hundred forty thousand, nine hundred forty-nine".