1223419649 has 2 divisors, whose sum is σ = 1223419650. Its totient is φ = 1223419648.

The previous prime is 1223419643. The next prime is 1223419679. The reversal of 1223419649 is 9469143221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648619024 + 574800625 = 25468^2 + 23975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223419649 - 2¹⁶ = 1223354113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223419643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611709824 + 611709825.

It is an arithmetic number, because the mean of its divisors is an integer number (611709825).

Almost surely, 2^1223419649 is an apocalyptic number.

It is an amenable number.

1223419649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223419649 is an equidigital number, since it uses as much as digits as its factorization.

1223419649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 1223419649 is about 34977.4162710741. The cubic root of 1223419649 is about 1069.5271585341.

The spelling of 1223419649 in words is "one billion, two hundred twenty-three million, four hundred nineteen thousand, six hundred forty-nine".