226404646493 has 2 divisors, whose sum is σ = 226404646494. Its totient is φ = 226404646492.

The previous prime is 226404646471. The next prime is 226404646529. The reversal of 226404646493 is 394646404622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185625690649 + 40778955844 = 430843^2 + 201938^2 .

It is a cyclic number.

It is not a de Polignac number, because 226404646493 - 2¹⁶ = 226404580957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226404646453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113202323246 + 113202323247.

It is an arithmetic number, because the mean of its divisors is an integer number (113202323247).

Almost surely, 2^226404646493 is an apocalyptic number.

It is an amenable number.

226404646493 is a deficient number, since it is larger than the sum of its proper divisors (1).

226404646493 is an equidigital number, since it uses as much as digits as its factorization.

226404646493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 50.

The spelling of 226404646493 in words is "two hundred twenty-six billion, four hundred four million, six hundred forty-six thousand, four hundred ninety-three".