1850870085 has 16 divisors (see below), whose sum is σ = 3117255360. Its totient is φ = 935176320.

The previous prime is 1850870071. The next prime is 1850870111. The reversal of 1850870085 is 5800780581.

It is not a de Polignac number, because 1850870085 - 2²² = 1846675781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246856 + ... + 3247425.

It is an arithmetic number, because the mean of its divisors is an integer number (194828460).

Almost surely, 2^1850870085 is an apocalyptic number.

1850870085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1850870085 is a deficient number, since it is larger than the sum of its proper divisors (1266385275).

1850870085 is a wasteful number, since it uses less digits than its factorization.

1850870085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494308.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 1850870085 is about 43021.7396789112. The cubic root of 1850870085 is about 1227.7934495852.

The spelling of 1850870085 in words is "one billion, eight hundred fifty million, eight hundred seventy thousand, eighty-five".