1808538243036 has 48 divisors (see below), whose sum is σ = 4823051439360. Its totient is φ = 516694913280.

The previous prime is 1808538243011. The next prime is 1808538243053. The reversal of 1808538243036 is 6303428358081.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1808538243036.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829860 + ... + 2075028.

It is an arithmetic number, because the mean of its divisors is an integer number (100480238320).

Almost surely, 2^{1808538243036} is an apocalyptic number.

It is an amenable number.

1808538243036 is an abundant number, since it is smaller than the sum of its proper divisors (3014513196324).

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

1808538243036 is a wasteful number, since it uses less digits than its factorization.

1808538243036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262474 (or 1262472 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 1808538243036 in words is "one trillion, eight hundred eight billion, five hundred thirty-eight million, two hundred forty-three thousand, thirty-six".