1850000016685 has 4 divisors (see below), whose sum is σ = 2220000020028. Its totient is φ = 1480000013344.

The previous prime is 1850000016569. The next prime is 1850000016703. The reversal of 1850000016685 is 5866100000581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 561089385481 + 1288910631204 = 749059^2 + 1135302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850000016685 - 2¹⁵ = 1849999983917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185000001664 + ... + 185000001673.

It is an arithmetic number, because the mean of its divisors is an integer number (555000005007).

Almost surely, 2^{1850000016685} is an apocalyptic number.

It is an amenable number.

1850000016685 is a deficient number, since it is larger than the sum of its proper divisors (370000003343).

1850000016685 is an equidigital number, since it uses as much as digits as its factorization.

1850000016685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370000003342.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 1850000016685 in words is "one trillion, eight hundred fifty billion, sixteen thousand, six hundred eighty-five".