1305491312948 has 12 divisors (see below), whose sum is σ = 2418998609412. Its totient is φ = 614348853120.

The previous prime is 1305491312933. The next prime is 1305491312953. The reversal of 1305491312948 is 8492131945031.

It can be written as a sum of positive squares in 2 ways, for example, as 597624855844 + 707866457104 = 773062^2 + 841348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1305491312896 and 1305491312905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9599200763 + ... + 9599200898.

It is an arithmetic number, because the mean of its divisors is an integer number (201583217451).

Almost surely, 2^{1305491312948} is an apocalyptic number.

It is an amenable number.

1305491312948 is a deficient number, since it is larger than the sum of its proper divisors (1113507296464).

1305491312948 is a wasteful number, since it uses less digits than its factorization.

1305491312948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19198401682 (or 19198401680 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 1305491312948 in words is "one trillion, three hundred five billion, four hundred ninety-one million, three hundred twelve thousand, nine hundred forty-eight".