1428348824649 has 12 divisors (see below), whose sum is σ = 2184533496756. Its totient is φ = 896218870272.

The previous prime is 1428348824641. The next prime is 1428348824657. The reversal of 1428348824649 is 9464288438241.

It is a happy number.

1428348824649 is a `hidden beast` number, since 1 + 4 + 2 + 8 + 348 + 8 + 246 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (1428348824641) and next prime (1428348824657).

It can be written as a sum of positive squares in 2 ways, for example, as 863957237049 + 564391587600 = 929493^2 + 751260^2 .

It is not a de Polignac number, because 1428348824649 - 2³ = 1428348824641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428348824641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4667806464 + ... + 4667806769.

It is an arithmetic number, because the mean of its divisors is an integer number (182044458063).

Almost surely, 2^{1428348824649} is an apocalyptic number.

It is an amenable number.

1428348824649 is a deficient number, since it is larger than the sum of its proper divisors (756184672107).

1428348824649 is a wasteful number, since it uses less digits than its factorization.

1428348824649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9335613256 (or 9335613253 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 63.

The spelling of 1428348824649 in words is "one trillion, four hundred twenty-eight billion, three hundred forty-eight million, eight hundred twenty-four thousand, six hundred forty-nine".