108581809 has 16 divisors (see below), whose sum is σ = 128459776. Its totient is φ = 89812800.

The previous prime is 108581807. The next prime is 108581819. The reversal of 108581809 is 908185801.

It is not a de Polignac number, because 108581809 - 2¹ = 108581807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108581807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143059 + ... + 143815.

It is an arithmetic number, because the mean of its divisors is an integer number (8028736).

Almost surely, 2^108581809 is an apocalyptic number.

It is an amenable number.

108581809 is a deficient number, since it is larger than the sum of its proper divisors (19877967).

108581809 is an equidigital number, since it uses as much as digits as its factorization.

108581809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 108581809 is about 10420.2595457119. The cubic root of 108581809 is about 477.0739366218.

The spelling of 108581809 in words is "one hundred eight million, five hundred eighty-one thousand, eight hundred nine".