226468181 has 2 divisors, whose sum is σ = 226468182. Its totient is φ = 226468180.

The previous prime is 226468171. The next prime is 226468211. The reversal of 226468181 is 181864622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210540100 + 15928081 = 14510^2 + 3991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226468181 is a prime.

It is a super-2 number, since 2×226468181² = 102575674010897522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226468171) 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, 113234090 + 113234091.

It is an arithmetic number, because the mean of its divisors is an integer number (113234091).

Almost surely, 2^226468181 is an apocalyptic number.

It is an amenable number.

226468181 is a deficient number, since it is larger than the sum of its proper divisors (1).

226468181 is an equidigital number, since it uses as much as digits as its factorization.

226468181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 38.

The square root of 226468181 is about 15048.8597906951. The cubic root of 226468181 is about 609.5402618560.

The spelling of 226468181 in words is "two hundred twenty-six million, four hundred sixty-eight thousand, one hundred eighty-one".