1447145641 has 2 divisors, whose sum is σ = 1447145642. Its totient is φ = 1447145640.

The previous prime is 1447145633. The next prime is 1447145677. The reversal of 1447145641 is 1465417441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1446661225 + 484416 = 38035^2 + 696^2 .

It is an emirp because it is prime and its reverse (1465417441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1447145641 - 2³ = 1447145633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1447145641.

It is not a weakly prime, because it can be changed into another prime (1447145611) 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, 723572820 + 723572821.

It is an arithmetic number, because the mean of its divisors is an integer number (723572821).

Almost surely, 2^1447145641 is an apocalyptic number.

It is an amenable number.

1447145641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447145641 is an equidigital number, since it uses as much as digits as its factorization.

1447145641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 1447145641 is about 38041.3674964505. The cubic root of 1447145641 is about 1131.1080162208.

The spelling of 1447145641 in words is "one billion, four hundred forty-seven million, one hundred forty-five thousand, six hundred forty-one".