226981819 has 2 divisors, whose sum is σ = 226981820. Its totient is φ = 226981818.

The previous prime is 226981801. The next prime is 226981837. The reversal of 226981819 is 918189622.

It is a balanced prime because it is at equal distance from previous prime (226981801) and next prime (226981837).

It is a cyclic number.

It is not a de Polignac number, because 226981819 - 2⁵ = 226981787 is a prime.

It is a super-2 number, since 2×226981819² = 103041492313097522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (226981849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113490909 + 113490910.

It is an arithmetic number, because the mean of its divisors is an integer number (113490910).

Almost surely, 2^226981819 is an apocalyptic number.

226981819 is a deficient number, since it is larger than the sum of its proper divisors (1).

226981819 is an equidigital number, since it uses as much as digits as its factorization.

226981819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 46.

The square root of 226981819 is about 15065.9158035614. The cubic root of 226981819 is about 610.0007336729. Note that the first 3 decimals are identical.

The spelling of 226981819 in words is "two hundred twenty-six million, nine hundred eighty-one thousand, eight hundred nineteen".