1329907680 has 192 divisors, whose sum is σ = 4679942400. Its totient is φ = 352719360.

The previous prime is 1329907669. The next prime is 1329907721. The reversal of 1329907680 is 867099231.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 910791 + ... + 912249.

It is an arithmetic number, because the mean of its divisors is an integer number (24374700).

Almost surely, 2^1329907680 is an apocalyptic number.

1329907680 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 1329907680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339971200).

1329907680 is an abundant number, since it is smaller than the sum of its proper divisors (3350034720).

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

1329907680 is a wasteful number, since it uses less digits than its factorization.

1329907680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1329907680 is about 36467.8993088442. The cubic root of 1329907680 is about 1099.6990030441.

The spelling of 1329907680 in words is "one billion, three hundred twenty-nine million, nine hundred seven thousand, six hundred eighty".