228537718529 has 2 divisors, whose sum is σ = 228537718530. Its totient is φ = 228537718528.

The previous prime is 228537718517. The next prime is 228537718609. The reversal of 228537718529 is 925817735822.

It is a happy number.

228537718529 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., 194220897025 + 34316821504 = 440705^2 + 185248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228537718529 is a prime.

It is not a weakly prime, because it can be changed into another prime (228537714529) 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, 114268859264 + 114268859265.

It is an arithmetic number, because the mean of its divisors is an integer number (114268859265).

Almost surely, 2^228537718529 is an apocalyptic number.

It is an amenable number.

228537718529 is a deficient number, since it is larger than the sum of its proper divisors (1).

228537718529 is an equidigital number, since it uses as much as digits as its factorization.

228537718529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 59.

The spelling of 228537718529 in words is "two hundred twenty-eight billion, five hundred thirty-seven million, seven hundred eighteen thousand, five hundred twenty-nine".