1226643359 has 2 divisors, whose sum is σ = 1226643360. Its totient is φ = 1226643358.

The previous prime is 1226643331. The next prime is 1226643409. The reversal of 1226643359 is 9533466221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226643359 - 2¹² = 1226639263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226643559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613321679 + 613321680.

It is an arithmetic number, because the mean of its divisors is an integer number (613321680).

Almost surely, 2^1226643359 is an apocalyptic number.

1226643359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226643359 is an equidigital number, since it uses as much as digits as its factorization.

1226643359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The square root of 1226643359 is about 35023.4686888663. The cubic root of 1226643359 is about 1070.4657357611.

The spelling of 1226643359 in words is "one billion, two hundred twenty-six million, six hundred forty-three thousand, three hundred fifty-nine".