10081809 has 12 divisors (see below), whose sum is σ = 14669200. Its totient is φ = 6672024.

The previous prime is 10081807. The next prime is 10081847. The reversal of 10081809 is 90818001.

It is not a de Polignac number, because 10081809 - 2¹ = 10081807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10081801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2779 + ... + 5280.

Almost surely, 2^10081809 is an apocalyptic number.

It is an amenable number.

10081809 is a deficient number, since it is larger than the sum of its proper divisors (4587391).

10081809 is a wasteful number, since it uses less digits than its factorization.

10081809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204 (or 8201 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 10081809 is about 3175.1864512183. The cubic root of 10081809 is about 216.0293812913.

The spelling of 10081809 in words is "ten million, eighty-one thousand, eight hundred nine".