1680163896 has 32 divisors (see below), whose sum is σ = 4289783040. Its totient is φ = 548138208.

The previous prime is 1680163889. The next prime is 1680163963. The reversal of 1680163896 is 6983610861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743626 + ... + 745881.

It is an arithmetic number, because the mean of its divisors is an integer number (134055720).

Almost surely, 2^1680163896 is an apocalyptic number.

It is an amenable number.

1680163896 is an abundant number, since it is smaller than the sum of its proper divisors (2609619144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680163896 is a wasteful number, since it uses less digits than its factorization.

1680163896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489563 (or 1489559 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1680163896 is about 40989.8023415581. The cubic root of 1680163896 is about 1188.8230474318.

The spelling of 1680163896 in words is "one billion, six hundred eighty million, one hundred sixty-three thousand, eight hundred ninety-six".