1680219899 has 8 divisors (see below), whose sum is σ = 1714099968. Its totient is φ = 1646623720.

The previous prime is 1680219887. The next prime is 1680219901. The reversal of 1680219899 is 9989120861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1680219899 - 2²⁸ = 1411784443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1680219899.

It is not an unprimeable number, because it can be changed into a prime (1680219829) 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 7 ways as a sum of consecutive naturals, for example, 58997 + ... + 82710.

It is an arithmetic number, because the mean of its divisors is an integer number (214262496).

Almost surely, 2^1680219899 is an apocalyptic number.

1680219899 is a deficient number, since it is larger than the sum of its proper divisors (33880069).

1680219899 is a wasteful number, since it uses less digits than its factorization.

1680219899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141945.

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 1680219899 is about 40990.4854691915. The cubic root of 1680219899 is about 1188.8362558490.

The spelling of 1680219899 in words is "one billion, six hundred eighty million, two hundred nineteen thousand, eight hundred ninety-nine".