2218054193 has 2 divisors, whose sum is σ = 2218054194. Its totient is φ = 2218054192.

The previous prime is 2218054171. The next prime is 2218054213. The reversal of 2218054193 is 3914508122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2217185569 + 868624 = 47087^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218054193 - 2³⁰ = 1144312369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2218054103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109027096 + 1109027097.

It is an arithmetic number, because the mean of its divisors is an integer number (1109027097).

Almost surely, 2^2218054193 is an apocalyptic number.

It is an amenable number.

2218054193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218054193 is an equidigital number, since it uses as much as digits as its factorization.

2218054193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2218054193 is about 47096.2227041617. Note that the first 3 decimals coincide. The cubic root of 2218054193 is about 1304.1395056391.

The spelling of 2218054193 in words is "two billion, two hundred eighteen million, fifty-four thousand, one hundred ninety-three".