851381846 has 16 divisors (see below), whose sum is σ = 1522969344. Its totient is φ = 349013544.

The previous prime is 851381833. The next prime is 851381863. The reversal of 851381846 is 648183158.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 851381797 and 851381806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321700 + ... + 1322343.

It is an arithmetic number, because the mean of its divisors is an integer number (95185584).

Almost surely, 2^851381846 is an apocalyptic number.

851381846 is a deficient number, since it is larger than the sum of its proper divisors (671587498).

851381846 is a wasteful number, since it uses less digits than its factorization.

851381846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644075.

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

The square root of 851381846 is about 29178.4483137812. The cubic root of 851381846 is about 947.7812842950.

The spelling of 851381846 in words is "eight hundred fifty-one million, three hundred eighty-one thousand, eight hundred forty-six".