850138838418 has 8 divisors (see below), whose sum is σ = 1700277676848. Its totient is φ = 283379612804.

The previous prime is 850138838399. The next prime is 850138838459. The reversal of 850138838418 is 814838831058.

It is a sphenic number, since it is the product of 3 distinct primes.

850138838418 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 70844903196 + ... + 70844903207.

It is an arithmetic number, because the mean of its divisors is an integer number (212534709606).

Almost surely, 2^850138838418 is an apocalyptic number.

850138838418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

850138838418 is a wasteful number, since it uses less digits than its factorization.

850138838418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141689806408.

The product of its (nonzero) digits is 5898240, while the sum is 57.

The spelling of 850138838418 in words is "eight hundred fifty billion, one hundred thirty-eight million, eight hundred thirty-eight thousand, four hundred eighteen".