1329484660 has 72 divisors (see below), whose sum is σ = 3438827784. Its totient is φ = 429004800.

The previous prime is 1329484657. The next prime is 1329484661. The reversal of 1329484660 is 664849231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 121088016 + 1208396644 = 11004^2 + 34762^2 .

It is a super-2 number, since 2×1329484660² = 3535058922350631200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329484661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23241 + ... + 56560.

It is an arithmetic number, because the mean of its divisors is an integer number (47761497).

Almost surely, 2^1329484660 is an apocalyptic number.

1329484660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1329484660 is an abundant number, since it is smaller than the sum of its proper divisors (2109343124).

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

1329484660 is a wasteful number, since it uses less digits than its factorization.

1329484660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79841 (or 79832 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 1329484660 is about 36462.0989521997. The cubic root of 1329484660 is about 1099.5823924424.

The spelling of 1329484660 in words is "one billion, three hundred twenty-nine million, four hundred eighty-four thousand, six hundred sixty".