856318194 has 12 divisors (see below), whose sum is σ = 1855356126. Its totient is φ = 285439392.

The previous prime is 856318193. The next prime is 856318241. The reversal of 856318194 is 491813658.

856318194 is a `hidden beast` number, since 8 + 5 + 631 + 8 + 1 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 436601025 + 419717169 = 20895^2 + 20487^2 .

It is not an unprimeable number, because it can be changed into a prime (856318193) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 23786599 + ... + 23786634.

Almost surely, 2^856318194 is an apocalyptic number.

856318194 is an abundant number, since it is smaller than the sum of its proper divisors (999037932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856318194 is a wasteful number, since it uses less digits than its factorization.

856318194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47573241 (or 47573238 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 856318194 is about 29262.9149949215. The cubic root of 856318194 is about 949.6095141251.

The spelling of 856318194 in words is "eight hundred fifty-six million, three hundred eighteen thousand, one hundred ninety-four".