1680216480 has 192 divisors, whose sum is σ = 5927644800. Its totient is φ = 444487680.

The previous prime is 1680216479. The next prime is 1680216481. The reversal of 1680216480 is 846120861.

1680216480 is a `hidden beast` number, since 1 + 6 + 8 + 0 + 2 + 1 + 648 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1680216479) and next prime (1680216481).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1680216481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564436 + ... + 567404.

It is an arithmetic number, because the mean of its divisors is an integer number (30873150).

Almost surely, 2^1680216480 is an apocalyptic number.

1680216480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1680216480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2963822400).

1680216480 is an abundant number, since it is smaller than the sum of its proper divisors (4247428320).

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

1680216480 is a wasteful number, since it uses less digits than its factorization.

1680216480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1680216480 is about 40990.4437643703. The cubic root of 1680216480 is about 1188.8354494796.

The spelling of 1680216480 in words is "one billion, six hundred eighty million, two hundred sixteen thousand, four hundred eighty".