851452818 has 32 divisors (see below), whose sum is σ = 1763242560. Its totient is φ = 273779520.

The previous prime is 851452813. The next prime is 851452841. The reversal of 851452818 is 818254158.

It is a super-2 number, since 2×851452818² = 1449943802560282248, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 851452818.

It is not an unprimeable number, because it can be changed into a prime (851452813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323548 + ... + 326168.

It is an arithmetic number, because the mean of its divisors is an integer number (55101330).

Almost surely, 2^851452818 is an apocalyptic number.

851452818 is an abundant number, since it is smaller than the sum of its proper divisors (911789742).

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

851452818 is a wasteful number, since it uses less digits than its factorization.

851452818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522.

The product of its digits is 102400, while the sum is 42.

The square root of 851452818 is about 29179.6644600311. The cubic root of 851452818 is about 947.8076195462.

The spelling of 851452818 in words is "eight hundred fifty-one million, four hundred fifty-two thousand, eight hundred eighteen".