851138 has 8 divisors (see below), whose sum is σ = 1332288. Its totient is φ = 407044.

The previous prime is 851131. The next prime is 851153. The reversal of 851138 is 831158.

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 (851131) 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 3 ways as a sum of consecutive naturals, for example, 9206 + ... + 9297.

It is an arithmetic number, because the mean of its divisors is an integer number (166536).

2⁸⁵¹¹³⁸ is an apocalyptic number.

851138 is a deficient number, since it is larger than the sum of its proper divisors (481150).

851138 is a wasteful number, since it uses less digits than its factorization.

851138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18528.

The product of its digits is 960, while the sum is 26.

The square root of 851138 is about 922.5714064505. The cubic root of 851138 is about 94.7690790335.

It can be divided in two parts, 851 and 138, that added together give a palindrome (989).

The spelling of 851138 in words is "eight hundred fifty-one thousand, one hundred thirty-eight".