1680808016 has 20 divisors (see below), whose sum is σ = 3279998400. Its totient is φ = 834356832.

The previous prime is 1680808009. The next prime is 1680808021. The reversal of 1680808016 is 6108080861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375656 + ... + 380103.

It is an arithmetic number, because the mean of its divisors is an integer number (163999920).

Almost surely, 2^1680808016 is an apocalyptic number.

1680808016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1680808016 is a deficient number, since it is larger than the sum of its proper divisors (1599190384).

1680808016 is a wasteful number, since it uses less digits than its factorization.

1680808016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755906 (or 755900 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1680808016 is about 40997.6586648555. The cubic root of 1680808016 is about 1188.9749466741.

Adding to 1680808016 its reverse (6108080861), we get a palindrome (7788888877).

The spelling of 1680808016 in words is "one billion, six hundred eighty million, eight hundred eight thousand, sixteen".