1329965520 has 160 divisors (see below), whose sum is σ = 4593456000. Its totient is φ = 316065792.

The previous prime is 1329965519. The next prime is 1329965543. The reversal of 1329965520 is 255699231.

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, 83131 + ... + 97829.

It is an arithmetic number, because the mean of its divisors is an integer number (28709100).

Almost surely, 2^1329965520 is an apocalyptic number.

1329965520 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 1329965520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2296728000).

1329965520 is an abundant number, since it is smaller than the sum of its proper divisors (3263490480).

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

1329965520 is a wasteful number, since it uses less digits than its factorization.

1329965520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14757 (or 14751 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 1329965520 is about 36468.6923264325. The cubic root of 1329965520 is about 1099.7149454209.

The spelling of 1329965520 in words is "one billion, three hundred twenty-nine million, nine hundred sixty-five thousand, five hundred twenty".