207349990789 has 2 divisors, whose sum is σ = 207349990790. Its totient is φ = 207349990788.

The previous prime is 207349990769. The next prime is 207349990819. The reversal of 207349990789 is 987099943702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204627760164 + 2722230625 = 452358^2 + 52175^2 .

It is a cyclic number.

It is not a de Polignac number, because 207349990789 - 2³¹ = 205202507141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207349990769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103674995394 + 103674995395.

It is an arithmetic number, because the mean of its divisors is an integer number (103674995395).

Almost surely, 2^207349990789 is an apocalyptic number.

It is an amenable number.

207349990789 is a deficient number, since it is larger than the sum of its proper divisors (1).

207349990789 is an equidigital number, since it uses as much as digits as its factorization.

207349990789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61725888, while the sum is 67.

The spelling of 207349990789 in words is "two hundred seven billion, three hundred forty-nine million, nine hundred ninety thousand, seven hundred eighty-nine".