528491194813 has 2 divisors, whose sum is σ = 528491194814. Its totient is φ = 528491194812.

The previous prime is 528491194807. The next prime is 528491194837. The reversal of 528491194813 is 318491194825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520882645284 + 7608549529 = 721722^2 + 87227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528491194813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528491194013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264245597406 + 264245597407.

It is an arithmetic number, because the mean of its divisors is an integer number (264245597407).

Almost surely, 2^528491194813 is an apocalyptic number.

It is an amenable number.

528491194813 is a deficient number, since it is larger than the sum of its proper divisors (1).

528491194813 is an equidigital number, since it uses as much as digits as its factorization.

528491194813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 55.

The spelling of 528491194813 in words is "five hundred twenty-eight billion, four hundred ninety-one million, one hundred ninety-four thousand, eight hundred thirteen".