818493045786 has 24 divisors (see below), whose sum is σ = 1909817107380. Its totient is φ = 251844014016.

The previous prime is 818493045781. The next prime is 818493045793. The reversal of 818493045786 is 687540394818.

818493045786 is a `hidden beast` number, since 8 + 18 + 4 + 93 + 0 + 457 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 587646429561 + 230846616225 = 766581^2 + 480465^2 .

It is not an unprimeable number, because it can be changed into a prime (818493045781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1748916531 + ... + 1748916998.

Almost surely, 2^818493045786 is an apocalyptic number.

818493045786 is an abundant number, since it is smaller than the sum of its proper divisors (1091324061594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818493045786 is a wasteful number, since it uses less digits than its factorization.

818493045786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497833550 (or 3497833547 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 818493045786 in words is "eight hundred eighteen billion, four hundred ninety-three million, forty-five thousand, seven hundred eighty-six".