813812173 has 8 divisors (see below), whose sum is σ = 823875840. Its totient is φ = 803769120.

The previous prime is 813812149. The next prime is 813812177. The reversal of 813812173 is 371218318.

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 813812173 - 2⁵ = 813812141 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 (813812177) 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 7 ways as a sum of consecutive naturals, for example, 83586 + ... + 92812.

It is an arithmetic number, because the mean of its divisors is an integer number (102984480).

Almost surely, 2^813812173 is an apocalyptic number.

It is an amenable number.

813812173 is a deficient number, since it is larger than the sum of its proper divisors (10063667).

813812173 is an equidigital number, since it uses as much as digits as its factorization.

813812173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307.

The product of its digits is 8064, while the sum is 34.

The square root of 813812173 is about 28527.3933789963. The cubic root of 813812173 is about 933.6298472719.

The spelling of 813812173 in words is "eight hundred thirteen million, eight hundred twelve thousand, one hundred seventy-three".