1449147649 has 2 divisors, whose sum is σ = 1449147650. Its totient is φ = 1449147648.

The previous prime is 1449147647. The next prime is 1449147671. The reversal of 1449147649 is 9467419441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1396367424 + 52780225 = 37368^2 + 7265^2 .

It is an emirp because it is prime and its reverse (9467419441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1449147649 - 2¹ = 1449147647 is a prime.

Together with 1449147647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1449147647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724573824 + 724573825.

It is an arithmetic number, because the mean of its divisors is an integer number (724573825).

Almost surely, 2^1449147649 is an apocalyptic number.

It is an amenable number.

1449147649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449147649 is an equidigital number, since it uses as much as digits as its factorization.

1449147649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 1449147649 is about 38067.6719671692. The cubic root of 1449147649 is about 1131.6293744473.

The spelling of 1449147649 in words is "one billion, four hundred forty-nine million, one hundred forty-seven thousand, six hundred forty-nine".