228801169109 has 2 divisors, whose sum is σ = 228801169110. Its totient is φ = 228801169108.

The previous prime is 228801169099. The next prime is 228801169213. The reversal of 228801169109 is 901961108822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220871800900 + 7929368209 = 469970^2 + 89047^2 .

It is a cyclic number.

It is not a de Polignac number, because 228801169109 - 2⁸ = 228801168853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228801169609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114400584554 + 114400584555.

It is an arithmetic number, because the mean of its divisors is an integer number (114400584555).

Almost surely, 2^228801169109 is an apocalyptic number.

It is an amenable number.

228801169109 is a deficient number, since it is larger than the sum of its proper divisors (1).

228801169109 is an equidigital number, since it uses as much as digits as its factorization.

228801169109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 228801169109 in words is "two hundred twenty-eight billion, eight hundred one million, one hundred sixty-nine thousand, one hundred nine".