2085221693 has 4 divisors (see below), whose sum is σ = 2129588160. Its totient is φ = 2040855228.

The previous prime is 2085221687. The next prime is 2085221711. The reversal of 2085221693 is 3961225802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2085221693 - 2¹² = 2085217597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085221623) by changing a digit.

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, 22183163 + ... + 22183256.

It is an arithmetic number, because the mean of its divisors is an integer number (532397040).

Almost surely, 2^2085221693 is an apocalyptic number.

It is an amenable number.

2085221693 is a deficient number, since it is larger than the sum of its proper divisors (44366467).

2085221693 is an equidigital number, since it uses as much as digits as its factorization.

2085221693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44366466.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2085221693 is about 45664.2277171092. The cubic root of 2085221693 is about 1277.5681555441.

The spelling of 2085221693 in words is "two billion, eighty-five million, two hundred twenty-one thousand, six hundred ninety-three".