349718219 has 2 divisors, whose sum is σ = 349718220. Its totient is φ = 349718218.

The previous prime is 349718209. The next prime is 349718231. The reversal of 349718219 is 912817943.

It is a weak prime.

It is an emirp because it is prime and its reverse (912817943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349718219 - 2¹⁶ = 349652683 is a prime.

It is a super-2 number, since 2×349718219² = 244605665401063922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 349718219.

It is not a weakly prime, because it can be changed into another prime (349718209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174859109 + 174859110.

It is an arithmetic number, because the mean of its divisors is an integer number (174859110).

Almost surely, 2^349718219 is an apocalyptic number.

349718219 is a deficient number, since it is larger than the sum of its proper divisors (1).

349718219 is an equidigital number, since it uses as much as digits as its factorization.

349718219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 349718219 is about 18700.7545034953. The cubic root of 349718219 is about 704.5406991078.

The spelling of 349718219 in words is "three hundred forty-nine million, seven hundred eighteen thousand, two hundred nineteen".