17859800493 has 12 divisors (see below), whose sum is σ = 25946610300. Its totient is φ = 11837708736.

The previous prime is 17859800411. The next prime is 17859800527. The reversal of 17859800493 is 39400895871.

17859800493 is a `hidden beast` number, since 1 + 7 + 8 + 598 + 0 + 0 + 49 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12012598404 + 5847202089 = 109602^2 + 76467^2 .

It is not a de Polignac number, because 17859800493 - 2¹⁸ = 17859538349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17859808493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5733768 + ... + 5736881.

It is an arithmetic number, because the mean of its divisors is an integer number (2162217525).

Almost surely, 2^17859800493 is an apocalyptic number.

It is an amenable number.

17859800493 is a deficient number, since it is larger than the sum of its proper divisors (8086809807).

17859800493 is a wasteful number, since it uses less digits than its factorization.

17859800493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470828 (or 11470825 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 17859800493 in words is "seventeen billion, eight hundred fifty-nine million, eight hundred thousand, four hundred ninety-three".