226823491 has 2 divisors, whose sum is σ = 226823492. Its totient is φ = 226823490.

The previous prime is 226823489. The next prime is 226823533. The reversal of 226823491 is 194328622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226823491 - 2¹ = 226823489 is a prime.

Together with 226823489, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 226823491.

It is not a weakly prime, because it can be changed into another prime (226823461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113411745 + 113411746.

It is an arithmetic number, because the mean of its divisors is an integer number (113411746).

Almost surely, 2^226823491 is an apocalyptic number.

226823491 is a deficient number, since it is larger than the sum of its proper divisors (1).

226823491 is an equidigital number, since it uses as much as digits as its factorization.

226823491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 226823491 is about 15060.6603772876. The cubic root of 226823491 is about 609.8588681829.

The spelling of 226823491 in words is "two hundred twenty-six million, eight hundred twenty-three thousand, four hundred ninety-one".