1680240008 has 16 divisors (see below), whose sum is σ = 3156481680. Its totient is φ = 838511568.

The previous prime is 1680239971. The next prime is 1680240013. The reversal of 1680240008 is 8000420861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196610 + ... + 204977.

It is an arithmetic number, because the mean of its divisors is an integer number (197280105).

Almost surely, 2^1680240008 is an apocalyptic number.

It is an amenable number.

1680240008 is a deficient number, since it is larger than the sum of its proper divisors (1476241672).

1680240008 is a wasteful number, since it uses less digits than its factorization.

1680240008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402116 (or 402112 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1680240008 is about 40990.7307570870. The cubic root of 1680240008 is about 1188.8409985245.

Adding to 1680240008 its reverse (8000420861), we get a palindrome (9680660869).

The spelling of 1680240008 in words is "one billion, six hundred eighty million, two hundred forty thousand, eight".