1808054038818 has 48 divisors (see below), whose sum is σ = 4093813054656. Its totient is φ = 575629385760.

The previous prime is 1808054038781. The next prime is 1808054038829. The reversal of 1808054038818 is 8188304508081.

1808054038818 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 0 + 540 + 3 + 88 + 18 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2945188 + ... + 3505743.

It is an arithmetic number, because the mean of its divisors is an integer number (85287771972).

Almost surely, 2^{1808054038818} is an apocalyptic number.

1808054038818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1808054038818 is an abundant number, since it is smaller than the sum of its proper divisors (2285759015838).

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

1808054038818 is a wasteful number, since it uses less digits than its factorization.

1808054038818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451639 (or 6451636 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 1808054038818 in words is "one trillion, eight hundred eight billion, fifty-four million, thirty-eight thousand, eight hundred eighteen".