229018561 has 2 divisors, whose sum is σ = 229018562. Its totient is φ = 229018560.

The previous prime is 229018541. The next prime is 229018619. The reversal of 229018561 is 165810922.

229018561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183873600 + 45144961 = 13560^2 + 6719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229018561 is a prime.

It is not a weakly prime, because it can be changed into another prime (229018501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114509280 + 114509281.

It is an arithmetic number, because the mean of its divisors is an integer number (114509281).

Almost surely, 2^229018561 is an apocalyptic number.

It is an amenable number.

229018561 is a deficient number, since it is larger than the sum of its proper divisors (1).

229018561 is an equidigital number, since it uses as much as digits as its factorization.

229018561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 229018561 is about 15133.3592106974. The cubic root of 229018561 is about 611.8198461932.

The spelling of 229018561 in words is "two hundred twenty-nine million, eighteen thousand, five hundred sixty-one".