1226375669 has 2 divisors, whose sum is σ = 1226375670. Its totient is φ = 1226375668.

The previous prime is 1226375611. The next prime is 1226375707. The reversal of 1226375669 is 9665736221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969575044 + 256800625 = 31138^2 + 16025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226375669 - 2⁸ = 1226375413 is a prime.

It is a super-3 number, since 3×1226375669³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226375069) 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, 613187834 + 613187835.

It is an arithmetic number, because the mean of its divisors is an integer number (613187835).

Almost surely, 2^1226375669 is an apocalyptic number.

It is an amenable number.

1226375669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226375669 is an equidigital number, since it uses as much as digits as its factorization.

1226375669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 1226375669 is about 35019.6468999903. The cubic root of 1226375669 is about 1070.3878609607.

The spelling of 1226375669 in words is "one billion, two hundred twenty-six million, three hundred seventy-five thousand, six hundred sixty-nine".