228430221737 has 2 divisors, whose sum is σ = 228430221738. Its totient is φ = 228430221736.

The previous prime is 228430221727. The next prime is 228430221751. The reversal of 228430221737 is 737122034822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170716886041 + 57713335696 = 413179^2 + 240236^2 .

It is a cyclic number.

It is not a de Polignac number, because 228430221737 - 2²² = 228426027433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228430221694 and 228430221703.

It is not a weakly prime, because it can be changed into another prime (228430221727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114215110868 + 114215110869.

It is an arithmetic number, because the mean of its divisors is an integer number (114215110869).

Almost surely, 2^228430221737 is an apocalyptic number.

It is an amenable number.

228430221737 is a deficient number, since it is larger than the sum of its proper divisors (1).

228430221737 is an equidigital number, since it uses as much as digits as its factorization.

228430221737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 228430221737 in words is "two hundred twenty-eight billion, four hundred thirty million, two hundred twenty-one thousand, seven hundred thirty-seven".