228178219 has 2 divisors, whose sum is σ = 228178220. Its totient is φ = 228178218.

The previous prime is 228178207. The next prime is 228178367. The reversal of 228178219 is 912871822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228178219 - 2⁵ = 228178187 is a prime.

It is a super-2 number, since 2×228178219² = 104130599252023922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228178019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114089109 + 114089110.

It is an arithmetic number, because the mean of its divisors is an integer number (114089110).

Almost surely, 2^228178219 is an apocalyptic number.

228178219 is a deficient number, since it is larger than the sum of its proper divisors (1).

228178219 is an equidigital number, since it uses as much as digits as its factorization.

228178219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 40.

The square root of 228178219 is about 15105.5691385661. The cubic root of 228178219 is about 611.0706084586.

The spelling of 228178219 in words is "two hundred twenty-eight million, one hundred seventy-eight thousand, two hundred nineteen".