1226445403 has 2 divisors, whose sum is σ = 1226445404. Its totient is φ = 1226445402.

The previous prime is 1226445397. The next prime is 1226445413. The reversal of 1226445403 is 3045446221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226445403 - 2²⁹ = 689574491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226445413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613222701 + 613222702.

It is an arithmetic number, because the mean of its divisors is an integer number (613222702).

Almost surely, 2^1226445403 is an apocalyptic number.

1226445403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226445403 is an equidigital number, since it uses as much as digits as its factorization.

1226445403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1226445403 is about 35020.6425269440. The cubic root of 1226445403 is about 1070.4081486573.

The spelling of 1226445403 in words is "one billion, two hundred twenty-six million, four hundred forty-five thousand, four hundred three".