812199194 has 32 divisors (see below), whose sum is σ = 1328424960. Its totient is φ = 371012400.

The previous prime is 812199169. The next prime is 812199209. The reversal of 812199194 is 491991218.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 388877 + ... + 390959.

It is an arithmetic number, because the mean of its divisors is an integer number (41513280).

Almost surely, 2^812199194 is an apocalyptic number.

812199194 is a deficient number, since it is larger than the sum of its proper divisors (516225766).

812199194 is a wasteful number, since it uses less digits than its factorization.

812199194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its digits is 46656, while the sum is 44.

The square root of 812199194 is about 28499.1086527281. The cubic root of 812199194 is about 933.0126199390.

The spelling of 812199194 in words is "eight hundred twelve million, one hundred ninety-nine thousand, one hundred ninety-four".