1329941280 has 192 divisors, whose sum is σ = 4457980800. Its totient is φ = 332120064.

The previous prime is 1329941269. The next prime is 1329941341. The reversal of 1329941280 is 821499231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2847607 + ... + 2848073.

It is an arithmetic number, because the mean of its divisors is an integer number (23218650).

Almost surely, 2^1329941280 is an apocalyptic number.

1329941280 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 1329941280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228990400).

1329941280 is an abundant number, since it is smaller than the sum of its proper divisors (3128039520).

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

1329941280 is a wasteful number, since it uses less digits than its factorization.

1329941280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1329941280 is about 36468.3599850610. The cubic root of 1329941280 is about 1099.7082642321.

The spelling of 1329941280 in words is "one billion, three hundred twenty-nine million, nine hundred forty-one thousand, two hundred eighty".