228550019 has 2 divisors, whose sum is σ = 228550020. Its totient is φ = 228550018.

The previous prime is 228549983. The next prime is 228550037. The reversal of 228550019 is 910055822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228550019 is a prime.

It is a super-2 number, since 2×228550019² = 104470222369800722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228553019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114275009 + 114275010.

It is an arithmetic number, because the mean of its divisors is an integer number (114275010).

Almost surely, 2^228550019 is an apocalyptic number.

228550019 is a deficient number, since it is larger than the sum of its proper divisors (1).

228550019 is an equidigital number, since it uses as much as digits as its factorization.

228550019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 228550019 is about 15117.8708487670. The cubic root of 228550019 is about 611.4023268919.

The spelling of 228550019 in words is "two hundred twenty-eight million, five hundred fifty thousand, nineteen".