805388361 has 16 divisors (see below), whose sum is σ = 1107853824. Its totient is φ = 520055424.

The previous prime is 805388351. The next prime is 805388383. The reversal of 805388361 is 163883508.

It is not a de Polignac number, because 805388361 - 2⁵ = 805388329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (805388351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8485 + ... + 41021.

It is an arithmetic number, because the mean of its divisors is an integer number (69240864).

Almost surely, 2^805388361 is an apocalyptic number.

It is an amenable number.

805388361 is a deficient number, since it is larger than the sum of its proper divisors (302465463).

805388361 is a wasteful number, since it uses less digits than its factorization.

805388361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32800.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 805388361 is about 28379.3650563222. The cubic root of 805388361 is about 930.3973178032.

The spelling of 805388361 in words is "eight hundred five million, three hundred eighty-eight thousand, three hundred sixty-one".