2018222317 has 4 divisors (see below), whose sum is σ = 2087816220. Its totient is φ = 1948628416.

The previous prime is 2018222291. The next prime is 2018222321. The reversal of 2018222317 is 7132228102.

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 1320522921 + 697699396 = 36339^2 + 26414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018222317 - 2⁷ = 2018222189 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 (2018222917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34796908 + ... + 34796965.

It is an arithmetic number, because the mean of its divisors is an integer number (521954055).

Almost surely, 2^2018222317 is an apocalyptic number.

It is an amenable number.

2018222317 is a deficient number, since it is larger than the sum of its proper divisors (69593903).

2018222317 is an equidigital number, since it uses as much as digits as its factorization.

2018222317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69593902.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2018222317 is about 44924.6292917371. The cubic root of 2018222317 is about 1263.7359340365.

The spelling of 2018222317 in words is "two billion, eighteen million, two hundred twenty-two thousand, three hundred seventeen".