1680885360 has 240 divisors, whose sum is σ = 7038120960. Its totient is φ = 349263360.

The previous prime is 1680885307. The next prime is 1680885383. The reversal of 1680885360 is 635880861.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 40281 + ... + 70599.

It is an arithmetic number, because the mean of its divisors is an integer number (29325504).

Almost surely, 2^1680885360 is an apocalyptic number.

1680885360 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 1680885360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3519060480).

1680885360 is an abundant number, since it is smaller than the sum of its proper divisors (5357235600).

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

1680885360 is a wasteful number, since it uses less digits than its factorization.

1680885360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30356 (or 30347 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1680885360 is about 40998.6019273828. The cubic root of 1680885360 is about 1188.9931836702.

The spelling of 1680885360 in words is "one billion, six hundred eighty million, eight hundred eighty-five thousand, three hundred sixty".