226180861 has 2 divisors, whose sum is σ = 226180862. Its totient is φ = 226180860.

The previous prime is 226180847. The next prime is 226180901. The reversal of 226180861 is 168081622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165636900 + 60543961 = 12870^2 + 7781^2 .

It is a cyclic number.

It is not a de Polignac number, because 226180861 - 2²¹ = 224083709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226180841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113090430 + 113090431.

It is an arithmetic number, because the mean of its divisors is an integer number (113090431).

Almost surely, 2^226180861 is an apocalyptic number.

It is an amenable number.

226180861 is a deficient number, since it is larger than the sum of its proper divisors (1).

226180861 is an equidigital number, since it uses as much as digits as its factorization.

226180861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 226180861 is about 15039.3105227600. The cubic root of 226180861 is about 609.2823783523.

The spelling of 226180861 in words is "two hundred twenty-six million, one hundred eighty thousand, eight hundred sixty-one".