245892491513 has 2 divisors, whose sum is σ = 245892491514. Its totient is φ = 245892491512.

The previous prime is 245892491497. The next prime is 245892491617. The reversal of 245892491513 is 315194298542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243593576704 + 2298914809 = 493552^2 + 47947^2 .

It is a cyclic number.

It is not a de Polignac number, because 245892491513 - 2⁴ = 245892491497 is a prime.

It is not a weakly prime, because it can be changed into another prime (245892499513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122946245756 + 122946245757.

It is an arithmetic number, because the mean of its divisors is an integer number (122946245757).

Almost surely, 2^245892491513 is an apocalyptic number.

It is an amenable number.

245892491513 is a deficient number, since it is larger than the sum of its proper divisors (1).

245892491513 is an equidigital number, since it uses as much as digits as its factorization.

245892491513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 53.

The spelling of 245892491513 in words is "two hundred forty-five billion, eight hundred ninety-two million, four hundred ninety-one thousand, five hundred thirteen".