812851205 has 8 divisors (see below), whose sum is σ = 976384800. Its totient is φ = 649638736.

The previous prime is 812851157. The next prime is 812851219. The reversal of 812851205 is 502158218.

It is a happy number.

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 812851205 - 2⁸ = 812850949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74675 + ... + 84864.

It is an arithmetic number, because the mean of its divisors is an integer number (122048100).

Almost surely, 2^812851205 is an apocalyptic number.

It is an amenable number.

812851205 is a deficient number, since it is larger than the sum of its proper divisors (163533595).

812851205 is a wasteful number, since it uses less digits than its factorization.

812851205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160563.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 812851205 is about 28510.5455051284. The cubic root of 812851205 is about 933.2622187171.

It can be divided in two parts, 81285120 and 5, that multiplied together give a square (406425600 = 20160²).

The spelling of 812851205 in words is "eight hundred twelve million, eight hundred fifty-one thousand, two hundred five".