1329922961 has 2 divisors, whose sum is σ = 1329922962. Its totient is φ = 1329922960.

The previous prime is 1329922933. The next prime is 1329922969. The reversal of 1329922961 is 1692299231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1329331600 + 591361 = 36460^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329922961 - 2⁶ = 1329922897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1329922969) by changing a digit.

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 as a sum of consecutive naturals, namely, 664961480 + 664961481.

It is an arithmetic number, because the mean of its divisors is an integer number (664961481).

Almost surely, 2^1329922961 is an apocalyptic number.

It is an amenable number.

1329922961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329922961 is an equidigital number, since it uses as much as digits as its factorization.

1329922961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 1329922961 is about 36468.1088212701. The cubic root of 1329922961 is about 1099.7032149746.

The spelling of 1329922961 in words is "one billion, three hundred twenty-nine million, nine hundred twenty-two thousand, nine hundred sixty-one".