851516794 has 8 divisors (see below), whose sum is σ = 1277502228. Its totient is φ = 425682720.

The previous prime is 851516761. The next prime is 851516797. The reversal of 851516794 is 497615158.

851516794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 843031225 + 8485569 = 29035^2 + 2913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (851516797) 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, 22537 + ... + 47020.

Almost surely, 2^851516794 is an apocalyptic number.

851516794 is a deficient number, since it is larger than the sum of its proper divisors (425985434).

851516794 is a wasteful number, since it uses less digits than its factorization.

851516794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75680.

The product of its digits is 302400, while the sum is 46.

The square root of 851516794 is about 29180.7606823400. The cubic root of 851516794 is about 947.8313575700.

The spelling of 851516794 in words is "eight hundred fifty-one million, five hundred sixteen thousand, seven hundred ninety-four".