219484919 has 2 divisors, whose sum is σ = 219484920. Its totient is φ = 219484918.

The previous prime is 219484891. The next prime is 219484921. The reversal of 219484919 is 919484912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219484919 is a prime.

It is a super-2 number, since 2×219484919² = 96347259336873122, which contains 22 as substring.

Together with 219484921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219484949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109742459 + 109742460.

It is an arithmetic number, because the mean of its divisors is an integer number (109742460).

Almost surely, 2^219484919 is an apocalyptic number.

219484919 is a deficient number, since it is larger than the sum of its proper divisors (1).

219484919 is an equidigital number, since it uses as much as digits as its factorization.

219484919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 219484919 is about 14815.0234221887. The cubic root of 219484919 is about 603.2095772609.

The spelling of 219484919 in words is "two hundred nineteen million, four hundred eighty-four thousand, nine hundred nineteen".