108081805 has 16 divisors (see below), whose sum is σ = 142047360. Its totient is φ = 78458688.

The previous prime is 108081803. The next prime is 108081821. The reversal of 108081805 is 508180801.

108081805 = T₉₉ + T₁₀₀ + ... + T₈₆₅.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 108081805 - 2¹ = 108081803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108081803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10257 + ... + 17926.

It is an arithmetic number, because the mean of its divisors is an integer number (8877960).

Almost surely, 2^108081805 is an apocalyptic number.

It is an amenable number.

108081805 is a deficient number, since it is larger than the sum of its proper divisors (33965555).

108081805 is a wasteful number, since it uses less digits than its factorization.

108081805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28260.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 108081805 is about 10396.2399452879. The cubic root of 108081805 is about 476.3405235255.

The spelling of 108081805 in words is "one hundred eight million, eighty-one thousand, eight hundred five".