1680163408 has 60 divisors (see below), whose sum is σ = 4089356320. Its totient is φ = 654603840.

The previous prime is 1680163403. The next prime is 1680163417. The reversal of 1680163408 is 8043610861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680163403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48438 + ... + 75541.

Almost surely, 2^1680163408 is an apocalyptic number.

It is an amenable number.

1680163408 is an abundant number, since it is smaller than the sum of its proper divisors (2409192912).

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

1680163408 is a wasteful number, since it uses less digits than its factorization.

1680163408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124016 (or 123999 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1680163408 is about 40989.7963888576. The cubic root of 1680163408 is about 1188.8229323347.

The spelling of 1680163408 in words is "one billion, six hundred eighty million, one hundred sixty-three thousand, four hundred eight".