800818081 has 8 divisors (see below), whose sum is σ = 921282944. Its totient is φ = 681868800.

The previous prime is 800818079. The next prime is 800818087. The reversal of 800818081 is 180818008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 800818081 - 2¹ = 800818079 is a prime.

It is a super-2 number, since 2×800818081² = 1282619197713045122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800818087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377760 + ... + 379873.

It is an arithmetic number, because the mean of its divisors is an integer number (115160368).

Almost surely, 2^800818081 is an apocalyptic number.

It is an amenable number.

800818081 is a deficient number, since it is larger than the sum of its proper divisors (120464863).

800818081 is a wasteful number, since it uses less digits than its factorization.

800818081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757791.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 800818081 is about 28298.7293177627. The cubic root of 800818081 is about 928.6340918918.

The spelling of 800818081 in words is "eight hundred million, eight hundred eighteen thousand, eighty-one".