1680850399 has 2 divisors, whose sum is σ = 1680850400. Its totient is φ = 1680850398.

The previous prime is 1680850357. The next prime is 1680850417. The reversal of 1680850399 is 9930580861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1680850399 - 2¹⁵ = 1680817631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680850799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840425199 + 840425200.

It is an arithmetic number, because the mean of its divisors is an integer number (840425200).

Almost surely, 2^1680850399 is an apocalyptic number.

1680850399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680850399 is an equidigital number, since it uses as much as digits as its factorization.

1680850399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1680850399 is about 40998.1755569684. The cubic root of 1680850399 is about 1188.9849402607.

The spelling of 1680850399 in words is "one billion, six hundred eighty million, eight hundred fifty thousand, three hundred ninety-nine".