228112169 has 2 divisors, whose sum is σ = 228112170. Its totient is φ = 228112168.

The previous prime is 228112163. The next prime is 228112177. The reversal of 228112169 is 961211822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131974144 + 96138025 = 11488^2 + 9805^2 .

It is a cyclic number.

It is not a de Polignac number, because 228112169 - 2²⁴ = 211334953 is a prime.

It is a super-2 number, since 2×228112169² = 104070323291769122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (228112163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114056084 + 114056085.

It is an arithmetic number, because the mean of its divisors is an integer number (114056085).

Almost surely, 2^228112169 is an apocalyptic number.

It is an amenable number.

228112169 is a deficient number, since it is larger than the sum of its proper divisors (1).

228112169 is an equidigital number, since it uses as much as digits as its factorization.

228112169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 228112169 is about 15103.3827005741. The cubic root of 228112169 is about 611.0116412342.

The spelling of 228112169 in words is "two hundred twenty-eight million, one hundred twelve thousand, one hundred sixty-nine".