805012193 has 4 divisors (see below), whose sum is σ = 822140160. Its totient is φ = 787884228.

The previous prime is 805012171. The next prime is 805012207. The reversal of 805012193 is 391210508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 805012193 - 2²⁴ = 788234977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (805012393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8563913 + ... + 8564006.

It is an arithmetic number, because the mean of its divisors is an integer number (205535040).

Almost surely, 2^805012193 is an apocalyptic number.

It is an amenable number.

805012193 is a deficient number, since it is larger than the sum of its proper divisors (17127967).

805012193 is a wasteful number, since it uses less digits than its factorization.

805012193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17127966.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 805012193 is about 28372.7367907997. The cubic root of 805012193 is about 930.2524435131.

The spelling of 805012193 in words is "eight hundred five million, twelve thousand, one hundred ninety-three".