2219213917 has 2 divisors, whose sum is σ = 2219213918. Its totient is φ = 2219213916.

The previous prime is 2219213849. The next prime is 2219213921. The reversal of 2219213917 is 7193129122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291036761 + 928177156 = 35931^2 + 30466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219213917 - 2¹⁵ = 2219181149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219213987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109606958 + 1109606959.

It is an arithmetic number, because the mean of its divisors is an integer number (1109606959).

Almost surely, 2^2219213917 is an apocalyptic number.

It is an amenable number.

2219213917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219213917 is an equidigital number, since it uses as much as digits as its factorization.

2219213917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 2219213917 is about 47108.5333777226. The cubic root of 2219213917 is about 1304.3667586324.

The spelling of 2219213917 in words is "two billion, two hundred nineteen million, two hundred thirteen thousand, nine hundred seventeen".