19228229 has 2 divisors, whose sum is σ = 19228230. Its totient is φ = 19228228.

The previous prime is 19228211. The next prime is 19228249. The reversal of 19228229 is 92282291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 4 = 4385^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 19228229 - 2⁸ = 19227973 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19228249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9614114 + 9614115.

It is an arithmetic number, because the mean of its divisors is an integer number (9614115).

Almost surely, 2^19228229 is an apocalyptic number.

It is an amenable number.

19228229 is a deficient number, since it is larger than the sum of its proper divisors (1).

19228229 is an equidigital number, since it uses as much as digits as its factorization.

19228229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 19228229 is about 4385.0004561003. Note that the first 3 decimals coincide. The cubic root of 19228229 is about 267.9043478726.

The spelling of 19228229 in words is "nineteen million, two hundred twenty-eight thousand, two hundred twenty-nine".