1680980963 has 2 divisors, whose sum is σ = 1680980964. Its totient is φ = 1680980962.

The previous prime is 1680980957. The next prime is 1680980993. The reversal of 1680980963 is 3690890861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1680980963 - 2⁴ = 1680980947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1680980923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840490481 + 840490482.

It is an arithmetic number, because the mean of its divisors is an integer number (840490482).

Almost surely, 2^1680980963 is an apocalyptic number.

1680980963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680980963 is an equidigital number, since it uses as much as digits as its factorization.

1680980963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 1680980963 is about 40999.7678408061. The cubic root of 1680980963 is about 1189.0157251956.

The spelling of 1680980963 in words is "one billion, six hundred eighty million, nine hundred eighty thousand, nine hundred sixty-three".