226945813 has 2 divisors, whose sum is σ = 226945814. Its totient is φ = 226945812.

The previous prime is 226945729. The next prime is 226945867. The reversal of 226945813 is 318549622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212634724 + 14311089 = 14582^2 + 3783^2 .

It is a cyclic number.

It is not a de Polignac number, because 226945813 - 2²¹ = 224848661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226945883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113472906 + 113472907.

It is an arithmetic number, because the mean of its divisors is an integer number (113472907).

Almost surely, 2^226945813 is an apocalyptic number.

It is an amenable number.

226945813 is a deficient number, since it is larger than the sum of its proper divisors (1).

226945813 is an equidigital number, since it uses as much as digits as its factorization.

226945813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 226945813 is about 15064.7208072370. The cubic root of 226945813 is about 609.9684772746.

The spelling of 226945813 in words is "two hundred twenty-six million, nine hundred forty-five thousand, eight hundred thirteen".