2271168985 has 8 divisors (see below), whose sum is σ = 2776825800. Its totient is φ = 1782653184.

The previous prime is 2271168983. The next prime is 2271168997. The reversal of 2271168985 is 5898611722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 647804304 + 1623364681 = 25452^2 + 40291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2271168985 - 2¹ = 2271168983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2271168983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4284960 + ... + 4285489.

It is an arithmetic number, because the mean of its divisors is an integer number (347103225).

Almost surely, 2^2271168985 is an apocalyptic number.

It is an amenable number.

2271168985 is a deficient number, since it is larger than the sum of its proper divisors (505656815).

2271168985 is an equidigital number, since it uses as much as digits as its factorization.

2271168985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570507.

The product of its digits is 483840, while the sum is 49.

The square root of 2271168985 is about 47656.7832002958. The cubic root of 2271168985 is about 1314.4673897379.

The spelling of 2271168985 in words is "two billion, two hundred seventy-one million, one hundred sixty-eight thousand, nine hundred eighty-five".