2218398269 has 2 divisors, whose sum is σ = 2218398270. Its totient is φ = 2218398268.

The previous prime is 2218398209. The next prime is 2218398283. The reversal of 2218398269 is 9628938122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1446280900 + 772117369 = 38030^2 + 27787^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218398269 - 2¹² = 2218394173 is a prime.

It is a super-2 number, since 2×2218398269² = 9842581759804392722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218398209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109199134 + 1109199135.

It is an arithmetic number, because the mean of its divisors is an integer number (1109199135).

Almost surely, 2^2218398269 is an apocalyptic number.

It is an amenable number.

2218398269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218398269 is an equidigital number, since it uses as much as digits as its factorization.

2218398269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 2218398269 is about 47099.8754669267. The cubic root of 2218398269 is about 1304.2069371000.

The spelling of 2218398269 in words is "two billion, two hundred eighteen million, three hundred ninety-eight thousand, two hundred sixty-nine".