851841836 has 6 divisors (see below), whose sum is σ = 1490723220. Its totient is φ = 425920916.

The previous prime is 851841701. The next prime is 851841857. The reversal of 851841836 is 638148158.

It is a happy number.

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 as a sum of consecutive naturals, namely, 106480226 + ... + 106480233.

It is an arithmetic number, because the mean of its divisors is an integer number (248453870).

Almost surely, 2^851841836 is an apocalyptic number.

It is an amenable number.

851841836 is a deficient number, since it is larger than the sum of its proper divisors (638881384).

851841836 is a wasteful number, since it uses less digits than its factorization.

851841836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212960463 (or 212960461 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 851841836 is about 29186.3296082258. The cubic root of 851841836 is about 947.9519446642.

The spelling of 851841836 in words is "eight hundred fifty-one million, eight hundred forty-one thousand, eight hundred thirty-six".