1332865649 has 2 divisors, whose sum is σ = 1332865650. Its totient is φ = 1332865648.

The previous prime is 1332865619. The next prime is 1332865673. The reversal of 1332865649 is 9465682331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1253655649 + 79210000 = 35407^2 + 8900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332865649 - 2¹² = 1332861553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1332865619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666432824 + 666432825.

It is an arithmetic number, because the mean of its divisors is an integer number (666432825).

Almost surely, 2^1332865649 is an apocalyptic number.

It is an amenable number.

1332865649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332865649 is an equidigital number, since it uses as much as digits as its factorization.

1332865649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 47.

The square root of 1332865649 is about 36508.4325738589. The cubic root of 1332865649 is about 1100.5137129452.

The spelling of 1332865649 in words is "one billion, three hundred thirty-two million, eight hundred sixty-five thousand, six hundred forty-nine".