1332388961 has 2 divisors, whose sum is σ = 1332388962. Its totient is φ = 1332388960.

The previous prime is 1332388933. The next prime is 1332388997. The reversal of 1332388961 is 1698832331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120977361 + 211411600 = 33481^2 + 14540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1332388961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1332388921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666194480 + 666194481.

It is an arithmetic number, because the mean of its divisors is an integer number (666194481).

Almost surely, 2^1332388961 is an apocalyptic number.

It is an amenable number.

1332388961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332388961 is an equidigital number, since it uses as much as digits as its factorization.

1332388961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 1332388961 is about 36501.9035257067. The cubic root of 1332388961 is about 1100.3825008626.

The spelling of 1332388961 in words is "one billion, three hundred thirty-two million, three hundred eighty-eight thousand, nine hundred sixty-one".