1328024820649 has 16 divisors (see below), whose sum is σ = 1411896548736. Its totient is φ = 1244800339200.

The previous prime is 1328024820637. The next prime is 1328024820691. The reversal of 1328024820649 is 9460284208231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328024820649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328024820349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5169604 + ... + 5420410.

It is an arithmetic number, because the mean of its divisors is an integer number (88243534296).

Almost surely, 2^{1328024820649} is an apocalyptic number.

It is an amenable number.

1328024820649 is a deficient number, since it is larger than the sum of its proper divisors (83871728087).

1328024820649 is a wasteful number, since it uses less digits than its factorization.

1328024820649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252096.

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 1328024820649 in words is "one trillion, three hundred twenty-eight billion, twenty-four million, eight hundred twenty thousand, six hundred forty-nine".