2198219819 has 2 divisors, whose sum is σ = 2198219820. Its totient is φ = 2198219818.

The previous prime is 2198219789. The next prime is 2198219843. The reversal of 2198219819 is 9189128912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198219819 is a prime.

It is a super-2 number, since 2×2198219819² = 9664340745288785522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2198219519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099109909 + 1099109910.

It is an arithmetic number, because the mean of its divisors is an integer number (1099109910).

Almost surely, 2^2198219819 is an apocalyptic number.

2198219819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198219819 is an equidigital number, since it uses as much as digits as its factorization.

2198219819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 50.

The square root of 2198219819 is about 46885.1769645802. The cubic root of 2198219819 is about 1300.2405509494.

The spelling of 2198219819 in words is "two billion, one hundred ninety-eight million, two hundred nineteen thousand, eight hundred nineteen".