128630219 has 2 divisors, whose sum is σ = 128630220. Its totient is φ = 128630218.

The previous prime is 128630179. The next prime is 128630233. The reversal of 128630219 is 912036821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128630219 - 2¹² = 128626123 is a prime.

It is a super-2 number, since 2×128630219² = 33091466479975922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128630239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64315109 + 64315110.

It is an arithmetic number, because the mean of its divisors is an integer number (64315110).

Almost surely, 2^128630219 is an apocalyptic number.

128630219 is a deficient number, since it is larger than the sum of its proper divisors (1).

128630219 is an equidigital number, since it uses as much as digits as its factorization.

128630219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 128630219 is about 11341.5263082180. The cubic root of 128630219 is about 504.7941768173.

The spelling of 128630219 in words is "one hundred twenty-eight million, six hundred thirty thousand, two hundred nineteen".