1449219643 has 2 divisors, whose sum is σ = 1449219644. Its totient is φ = 1449219642.

The previous prime is 1449219641. The next prime is 1449219647. The reversal of 1449219643 is 3469129441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1449219643 - 2¹ = 1449219641 is a prime.

Together with 1449219641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1449219643.

It is not a weakly prime, because it can be changed into another prime (1449219641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724609821 + 724609822.

It is an arithmetic number, because the mean of its divisors is an integer number (724609822).

Almost surely, 2^1449219643 is an apocalyptic number.

1449219643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449219643 is an equidigital number, since it uses as much as digits as its factorization.

1449219643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 1449219643 is about 38068.6175609254. The cubic root of 1449219643 is about 1131.6481140091.

The spelling of 1449219643 in words is "one billion, four hundred forty-nine million, two hundred nineteen thousand, six hundred forty-three".