1836853870205 has 4 divisors (see below), whose sum is σ = 2204224644252. Its totient is φ = 1469483096160.

The previous prime is 1836853870199. The next prime is 1836853870219. The reversal of 1836853870205 is 5020783586381.

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 804585678169 + 1032268192036 = 896987^2 + 1016006^2 .

It is not a de Polignac number, because 1836853870205 - 2¹² = 1836853866109 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, 183685387016 + ... + 183685387025.

It is an arithmetic number, because the mean of its divisors is an integer number (551056161063).

Almost surely, 2^{1836853870205} is an apocalyptic number.

It is an amenable number.

1836853870205 is a deficient number, since it is larger than the sum of its proper divisors (367370774047).

1836853870205 is an equidigital number, since it uses as much as digits as its factorization.

1836853870205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367370774046.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 1836853870205 in words is "one trillion, eight hundred thirty-six billion, eight hundred fifty-three million, eight hundred seventy thousand, two hundred five".