6528820493 has 4 divisors (see below), whose sum is σ = 7031037468. Its totient is φ = 6026603520.

The previous prime is 6528820483. The next prime is 6528820511. The reversal of 6528820493 is 3940288256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2277389284 + 4251431209 = 47722^2 + 65203^2 .

It is a cyclic number.

It is not a de Polignac number, because 6528820493 - 2⁴ = 6528820477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6528820453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251108468 + ... + 251108493.

It is an arithmetic number, because the mean of its divisors is an integer number (1757759367).

Almost surely, 2^6528820493 is an apocalyptic number.

It is an amenable number.

6528820493 is a deficient number, since it is larger than the sum of its proper divisors (502216975).

6528820493 is a wasteful number, since it uses less digits than its factorization.

6528820493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502216974.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 6528820493 is about 80801.1169044092. The cubic root of 6528820493 is about 1869.0097889813.

The spelling of 6528820493 in words is "six billion, five hundred twenty-eight million, eight hundred twenty thousand, four hundred ninety-three".