1680031346209 has 2 divisors, whose sum is σ = 1680031346210. Its totient is φ = 1680031346208.

The previous prime is 1680031346141. The next prime is 1680031346233. The reversal of 1680031346209 is 9026431300861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151897760225 + 528133585984 = 1073265^2 + 726728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1680031346209 - 2⁹ = 1680031345697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1680031346809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840015673104 + 840015673105.

It is an arithmetic number, because the mean of its divisors is an integer number (840015673105).

Almost surely, 2^{1680031346209} is an apocalyptic number.

It is an amenable number.

1680031346209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680031346209 is an equidigital number, since it uses as much as digits as its factorization.

1680031346209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 1680031346209 in words is "one trillion, six hundred eighty billion, thirty-one million, three hundred forty-six thousand, two hundred nine".