1804444081 has 12 divisors (see below), whose sum is σ = 1989816192. Its totient is φ = 1635095000.

The previous prime is 1804444051. The next prime is 1804444099.

1804444081 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1804444081 - 2¹³ = 1804435889 is a prime.

It is a super-2 number, since 2×1804444081² = 6512036882911869122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1804444021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13656 + ... + 61606.

It is an arithmetic number, because the mean of its divisors is an integer number (165818016).

Almost surely, 2^1804444081 is an apocalyptic number.

1804444081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1804444081 is a deficient number, since it is larger than the sum of its proper divisors (185372111).

1804444081 is a wasteful number, since it uses less digits than its factorization.

1804444081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48284 (or 48273 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 1804444081 is about 42478.7485809081. The cubic root of 1804444081 is about 1217.4406799984.

The spelling of 1804444081 in words is "one billion, eight hundred four million, four hundred forty-four thousand, eighty-one".