818008085 has 4 divisors (see below), whose sum is σ = 981609708. Its totient is φ = 654406464.

The previous prime is 818008073. The next prime is 818008211. The reversal of 818008085 is 580800818.

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 543542596 + 274465489 = 23314^2 + 16567^2 .

It is a cyclic number.

It is not a de Polignac number, because 818008085 - 2⁶ = 818008021 is a prime.

It is a Duffinian number.

It is a Curzon 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, 81800804 + ... + 81800813.

It is an arithmetic number, because the mean of its divisors is an integer number (245402427).

Almost surely, 2^818008085 is an apocalyptic number.

It is an amenable number.

818008085 is a deficient number, since it is larger than the sum of its proper divisors (163601623).

818008085 is a wasteful number, since it uses less digits than its factorization.

818008085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163601622.

The product of its (nonzero) digits is 20480, while the sum is 38.

The square root of 818008085 is about 28600.8406344988. The cubic root of 818008085 is about 935.2316564035.

The spelling of 818008085 in words is "eight hundred eighteen million, eight thousand, eighty-five".