1808719511814 has 12 divisors (see below), whose sum is σ = 3918892275636. Its totient is φ = 602906503932.

The previous prime is 1808719511743. The next prime is 1808719511857. The reversal of 1808719511814 is 4181159178081.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50242208644 + ... + 50242208679.

It is an arithmetic number, because the mean of its divisors is an integer number (326574356303).

Almost surely, 2^{1808719511814} is an apocalyptic number.

1808719511814 is an abundant number, since it is smaller than the sum of its proper divisors (2110172763822).

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

1808719511814 is a wasteful number, since it uses less digits than its factorization.

1808719511814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100484417331 (or 100484417328 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 54.

The spelling of 1808719511814 in words is "one trillion, eight hundred eight billion, seven hundred nineteen million, five hundred eleven thousand, eight hundred fourteen".