103818805 has 4 divisors (see below), whose sum is σ = 124582572. Its totient is φ = 83055040.

The previous prime is 103818797. The next prime is 103818821. The reversal of 103818805 is 508818301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40870449 + 62948356 = 6393^2 + 7934^2 .

It is not a de Polignac number, because 103818805 - 2³ = 103818797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10381876 + ... + 10381885.

It is an arithmetic number, because the mean of its divisors is an integer number (31145643).

Almost surely, 2^103818805 is an apocalyptic number.

It is an amenable number.

103818805 is a deficient number, since it is larger than the sum of its proper divisors (20763767).

103818805 is an equidigital number, since it uses as much as digits as its factorization.

103818805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763766.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 103818805 is about 10189.1513385561. The cubic root of 103818805 is about 469.9936697503.

The spelling of 103818805 in words is "one hundred three million, eight hundred eighteen thousand, eight hundred five".