851336892 has 144 divisors (see below), whose sum is σ = 2566916352. Its totient is φ = 241678080.

The previous prime is 851336891. The next prime is 851336917. The reversal of 851336892 is 298633158.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851336891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1435348 + ... + 1435940.

It is an arithmetic number, because the mean of its divisors is an integer number (17825808).

Almost surely, 2^851336892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851336892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283458176).

851336892 is an abundant number, since it is smaller than the sum of its proper divisors (1715579460).

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

851336892 is a wasteful number, since it uses less digits than its factorization.

851336892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 816 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 851336892 is about 29177.6779747807. The cubic root of 851336892 is about 947.7646026655.

The spelling of 851336892 in words is "eight hundred fifty-one million, three hundred thirty-six thousand, eight hundred ninety-two".