1680832693 has 2 divisors, whose sum is σ = 1680832694. Its totient is φ = 1680832692.

The previous prime is 1680832669. The next prime is 1680832717. The reversal of 1680832693 is 3962380861.

It is a balanced prime because it is at equal distance from previous prime (1680832669) and next prime (1680832717).

It can be written as a sum of positive squares in only one way, i.e., 1543075524 + 137757169 = 39282^2 + 11737^2 .

It is an emirp because it is prime and its reverse (3962380861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680832693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680832193) 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, 840416346 + 840416347.

It is an arithmetic number, because the mean of its divisors is an integer number (840416347).

Almost surely, 2^1680832693 is an apocalyptic number.

It is an amenable number.

1680832693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680832693 is an equidigital number, since it uses as much as digits as its factorization.

1680832693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 1680832693 is about 40997.9596199616. The cubic root of 1680832693 is about 1188.9807653420.

The spelling of 1680832693 in words is "one billion, six hundred eighty million, eight hundred thirty-two thousand, six hundred ninety-three".