800118013 has 4 divisors (see below), whose sum is σ = 800204860. Its totient is φ = 800031168.

The previous prime is 800117959. The next prime is 800118017. The reversal of 800118013 is 310811008.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 407959204 + 392158809 = 20198^2 + 19803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800118013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800118017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27708 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (200051215).

Almost surely, 2^800118013 is an apocalyptic number.

It is an amenable number.

800118013 is a deficient number, since it is larger than the sum of its proper divisors (86847).

800118013 is a wasteful number, since it uses less digits than its factorization.

800118013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86846.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 800118013 is about 28286.3573653449. The cubic root of 800118013 is about 928.3634117968.

The spelling of 800118013 in words is "eight hundred million, one hundred eighteen thousand, thirteen".