1680328599 has 4 divisors (see below), whose sum is σ = 2240438136. Its totient is φ = 1120219064.

The previous prime is 1680328597. The next prime is 1680328607. The reversal of 1680328599 is 9958230861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1680328599 - 2¹ = 1680328597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680328591) 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 in 3 ways as a sum of consecutive naturals, for example, 280054764 + ... + 280054769.

It is an arithmetic number, because the mean of its divisors is an integer number (560109534).

Almost surely, 2^1680328599 is an apocalyptic number.

1680328599 is a deficient number, since it is larger than the sum of its proper divisors (560109537).

1680328599 is an equidigital number, since it uses as much as digits as its factorization.

1680328599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560109536.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 1680328599 is about 40991.8113651983. The cubic root of 1680328599 is about 1188.8618921193.

The spelling of 1680328599 in words is "one billion, six hundred eighty million, three hundred twenty-eight thousand, five hundred ninety-nine".