228819049 has 2 divisors, whose sum is σ = 228819050. Its totient is φ = 228819048.

The previous prime is 228819007. The next prime is 228819079. The reversal of 228819049 is 940918822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199007449 + 29811600 = 14107^2 + 5460^2 .

It is a cyclic number.

It is not a de Polignac number, because 228819049 - 2¹⁹ = 228294761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228818996 and 228819014.

It is not a weakly prime, because it can be changed into another prime (228819079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114409524 + 114409525.

It is an arithmetic number, because the mean of its divisors is an integer number (114409525).

Almost surely, 2^228819049 is an apocalyptic number.

It is an amenable number.

228819049 is a deficient number, since it is larger than the sum of its proper divisors (1).

228819049 is an equidigital number, since it uses as much as digits as its factorization.

228819049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 228819049 is about 15126.7659795476. The cubic root of 228819049 is about 611.6421300815.

The spelling of 228819049 in words is "two hundred twenty-eight million, eight hundred nineteen thousand, forty-nine".