1808449385796 has 27 divisors (see below), whose sum is σ = 4571378565663. Its totient is φ = 602813772360.

The previous prime is 1808449385779. The next prime is 1808449385801. The reversal of 1808449385796 is 6975839448081.

The square root of 1808449385796 is 1344786.

It is a perfect power (a square), and thus also a powerful number.

1808449385796 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 4 + 49 + 3 + 8 + 579 + 6 = 666.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 7956651 + ... + 8180781.

Almost surely, 2^{1808449385796} is an apocalyptic number.

1808449385796 is the 1344786-th square number.

It is an amenable number.

1808449385796 is an abundant number, since it is smaller than the sum of its proper divisors (2762929179867).

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

1808449385796 is an frugal number, since it uses more digits than its factorization.

1808449385796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448272 (or 224136 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 1808449385796 in words is "one trillion, eight hundred eight billion, four hundred forty-nine million, three hundred eighty-five thousand, seven hundred ninety-six".