813857826530 has 16 divisors (see below), whose sum is σ = 1674221814720. Its totient is φ = 279036969072.

The previous prime is 813857826521. The next prime is 813857826611. The reversal of 813857826530 is 35628758318.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5813270120 + ... + 5813270259.

It is an arithmetic number, because the mean of its divisors is an integer number (104638863420).

Almost surely, 2^813857826530 is an apocalyptic number.

813857826530 is an abundant number, since it is smaller than the sum of its proper divisors (860363988190).

813857826530 is a wasteful number, since it uses less digits than its factorization.

813857826530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11626540393.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 813857826530 in words is "eight hundred thirteen billion, eight hundred fifty-seven million, eight hundred twenty-six thousand, five hundred thirty".