1304491378849 has 2 divisors, whose sum is σ = 1304491378850. Its totient is φ = 1304491378848.

The previous prime is 1304491378823. The next prime is 1304491378871. The reversal of 1304491378849 is 9488731944031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1299216988224 + 5274390625 = 1139832^2 + 72625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304491378849 - 2¹⁹ = 1304490854561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304491378049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652245689424 + 652245689425.

It is an arithmetic number, because the mean of its divisors is an integer number (652245689425).

Almost surely, 2^{1304491378849} is an apocalyptic number.

It is an amenable number.

1304491378849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304491378849 is an equidigital number, since it uses as much as digits as its factorization.

1304491378849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 1304491378849 in words is "one trillion, three hundred four billion, four hundred ninety-one million, three hundred seventy-eight thousand, eight hundred forty-nine".