428162219 has 2 divisors, whose sum is σ = 428162220. Its totient is φ = 428162218.

The previous prime is 428162213. The next prime is 428162237. The reversal of 428162219 is 912261824.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428162219 is a prime.

It is a super-2 number, since 2×428162219² = 366645771558007922, which contains 22 as substring.

It is equal to p_22755563 and since 428162219 and 22755563 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (428162213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214081109 + 214081110.

It is an arithmetic number, because the mean of its divisors is an integer number (214081110).

Almost surely, 2^428162219 is an apocalyptic number.

428162219 is a deficient number, since it is larger than the sum of its proper divisors (1).

428162219 is an equidigital number, since it uses as much as digits as its factorization.

428162219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 428162219 is about 20692.0810698199. The cubic root of 428162219 is about 753.7074027633.

The spelling of 428162219 in words is "four hundred twenty-eight million, one hundred sixty-two thousand, two hundred nineteen".