811807385 has 8 divisors (see below), whose sum is σ = 1005593856. Its totient is φ = 628495920.

The previous prime is 811807351. The next prime is 811807387. The reversal of 811807385 is 583708118.

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

It is not a de Polignac number, because 811807385 - 2²⁴ = 795030169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811807387) 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, 2618579 + ... + 2618888.

It is an arithmetic number, because the mean of its divisors is an integer number (125699232).

Almost surely, 2^811807385 is an apocalyptic number.

It is an amenable number.

811807385 is a deficient number, since it is larger than the sum of its proper divisors (193786471).

811807385 is a wasteful number, since it uses less digits than its factorization.

811807385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237503.

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 811807385 is about 28492.2337664143. The cubic root of 811807385 is about 932.8625658048.

The spelling of 811807385 in words is "eight hundred eleven million, eight hundred seven thousand, three hundred eighty-five".