229851109 has 2 divisors, whose sum is σ = 229851110. Its totient is φ = 229851108.

The previous prime is 229851107. The next prime is 229851131. The reversal of 229851109 is 901158922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194686209 + 35164900 = 13953^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 229851109 - 2¹ = 229851107 is a prime.

Together with 229851107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229851107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114925554 + 114925555.

It is an arithmetic number, because the mean of its divisors is an integer number (114925555).

Almost surely, 2^229851109 is an apocalyptic number.

It is an amenable number.

229851109 is a deficient number, since it is larger than the sum of its proper divisors (1).

229851109 is an equidigital number, since it uses as much as digits as its factorization.

229851109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 229851109 is about 15160.8413025135. The cubic root of 229851109 is about 612.5603296954.

The spelling of 229851109 in words is "two hundred twenty-nine million, eight hundred fifty-one thousand, one hundred nine".