2218353793 has 2 divisors, whose sum is σ = 2218353794. Its totient is φ = 2218353792.

The previous prime is 2218353791. The next prime is 2218353847. The reversal of 2218353793 is 3973538122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2198390769 + 19963024 = 46887^2 + 4468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218353793 - 2¹ = 2218353791 is a prime.

Together with 2218353791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2218353791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109176896 + 1109176897.

It is an arithmetic number, because the mean of its divisors is an integer number (1109176897).

Almost surely, 2^2218353793 is an apocalyptic number.

It is an amenable number.

2218353793 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218353793 is an equidigital number, since it uses as much as digits as its factorization.

2218353793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 2218353793 is about 47099.4033189381. The cubic root of 2218353793 is about 1304.1982211575.

The spelling of 2218353793 in words is "two billion, two hundred eighteen million, three hundred fifty-three thousand, seven hundred ninety-three".