226541993 has 2 divisors, whose sum is σ = 226541994. Its totient is φ = 226541992.

The previous prime is 226541977. The next prime is 226542031. The reversal of 226541993 is 399145622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115197289 + 111344704 = 10733^2 + 10552^2 .

It is a cyclic number.

It is not a de Polignac number, because 226541993 - 2⁴ = 226541977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 226541993.

It is not a weakly prime, because it can be changed into another prime (226541963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113270996 + 113270997.

It is an arithmetic number, because the mean of its divisors is an integer number (113270997).

Almost surely, 2^226541993 is an apocalyptic number.

It is an amenable number.

226541993 is a deficient number, since it is larger than the sum of its proper divisors (1).

226541993 is an equidigital number, since it uses as much as digits as its factorization.

226541993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 226541993 is about 15051.3120026129. The cubic root of 226541993 is about 609.6064764541.

The spelling of 226541993 in words is "two hundred twenty-six million, five hundred forty-one thousand, nine hundred ninety-three".