226019281 has 2 divisors, whose sum is σ = 226019282. Its totient is φ = 226019280.

The previous prime is 226019279. The next prime is 226019291. The reversal of 226019281 is 182910622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186076881 + 39942400 = 13641^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 226019281 - 2¹ = 226019279 is a prime.

It is a super-2 number, since 2×226019281² = 102169430767513922, which contains 22 as substring.

Together with 226019279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (226019201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113009640 + 113009641.

It is an arithmetic number, because the mean of its divisors is an integer number (113009641).

Almost surely, 2^226019281 is an apocalyptic number.

It is an amenable number.

226019281 is a deficient number, since it is larger than the sum of its proper divisors (1).

226019281 is an equidigital number, since it uses as much as digits as its factorization.

226019281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 226019281 is about 15033.9376412170. The cubic root of 226019281 is about 609.1372565844.

The spelling of 226019281 in words is "two hundred twenty-six million, nineteen thousand, two hundred eighty-one".