1329484661 has 2 divisors, whose sum is σ = 1329484662. Its totient is φ = 1329484660.

The previous prime is 1329484657. The next prime is 1329484669. The reversal of 1329484661 is 1664849231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265580625 + 63904036 = 35575^2 + 7994^2 .

It is an emirp because it is prime and its reverse (1664849231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1329484661 - 2² = 1329484657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329484669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664742330 + 664742331.

It is an arithmetic number, because the mean of its divisors is an integer number (664742331).

Almost surely, 2^1329484661 is an apocalyptic number.

It is an amenable number.

1329484661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329484661 is an equidigital number, since it uses as much as digits as its factorization.

1329484661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 1329484661 is about 36462.0989659125. The cubic root of 1329484661 is about 1099.5823927181.

The spelling of 1329484661 in words is "one billion, three hundred twenty-nine million, four hundred eighty-four thousand, six hundred sixty-one".