1806814539648 has 256 divisors, whose sum is σ = 5374112270400. Its totient is φ = 597595594752.

The previous prime is 1806814539637. The next prime is 1806814539683. The reversal of 1806814539648 is 8469354186081.

1806814539648 is a `hidden beast` number, since 1 + 8 + 0 + 68 + 145 + 396 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475851286 + ... + 475855082.

Almost surely, 2^{1806814539648} is an apocalyptic number.

1806814539648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806814539648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2687056135200).

1806814539648 is an abundant number, since it is smaller than the sum of its proper divisors (3567297730752).

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

1806814539648 is a wasteful number, since it uses less digits than its factorization.

1806814539648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 1806814539648 in words is "one trillion, eight hundred six billion, eight hundred fourteen million, five hundred thirty-nine thousand, six hundred forty-eight".