850193885 has 16 divisors (see below), whose sum is σ = 1085751216. Its totient is φ = 636883968.

The previous prime is 850193837. The next prime is 850193909. The reversal of 850193885 is 588391058.

It can be written as a sum of positive squares in 8 ways, for example, as 221087161 + 629106724 = 14869^2 + 25082^2 .

It is a cyclic number.

It is not a de Polignac number, because 850193885 - 2⁶ = 850193821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 8642 + ... + 42131.

It is an arithmetic number, because the mean of its divisors is an integer number (67859451).

Almost surely, 2^850193885 is an apocalyptic number.

850193885 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

850193885 is a deficient number, since it is larger than the sum of its proper divisors (235557331).

850193885 is a wasteful number, since it uses less digits than its factorization.

850193885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50992.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 850193885 is about 29158.0843849523. The cubic root of 850193885 is about 947.3402556720.

The spelling of 850193885 in words is "eight hundred fifty million, one hundred ninety-three thousand, eight hundred eighty-five".