800319861 has 24 divisors (see below), whose sum is σ = 1262308320. Its totient is φ = 484581600.

The previous prime is 800319857. The next prime is 800319911. The reversal of 800319861 is 168913008.

It is not a de Polignac number, because 800319861 - 2² = 800319857 is a prime.

It is a super-2 number, since 2×800319861² = 1281023759822118642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800319851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121431 + ... + 127851.

It is an arithmetic number, because the mean of its divisors is an integer number (52596180).

Almost surely, 2^800319861 is an apocalyptic number.

It is an amenable number.

800319861 is a deficient number, since it is larger than the sum of its proper divisors (461988459).

800319861 is a wasteful number, since it uses less digits than its factorization.

800319861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697 (or 7694 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 800319861 is about 28289.9250794342. The cubic root of 800319861 is about 928.4414721743.

The spelling of 800319861 in words is "eight hundred million, three hundred nineteen thousand, eight hundred sixty-one".