618229 has 2 divisors, whose sum is σ = 618230. Its totient is φ = 618228.

The previous prime is 618227. The next prime is 618253. The reversal of 618229 is 922816.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 142129 = 690^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 618229 - 2¹ = 618227 is a prime.

Together with 618227, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 618197 and 618206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309114 + 309115.

It is an arithmetic number, because the mean of its divisors is an integer number (309115).

2⁶¹⁸²²⁹ is an apocalyptic number.

It is an amenable number.

618229 is a deficient number, since it is larger than the sum of its proper divisors (1).

618229 is an equidigital number, since it uses as much as digits as its factorization.

618229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 618229 is about 786.2753970461. The cubic root of 618229 is about 85.1889223477.

The spelling of 618229 in words is "six hundred eighteen thousand, two hundred twenty-nine".