1226570489 has 2 divisors, whose sum is σ = 1226570490. Its totient is φ = 1226570488.

The previous prime is 1226570419. The next prime is 1226570539. The reversal of 1226570489 is 9840756221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083528889 + 143041600 = 32917^2 + 11960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226570489 - 2²⁸ = 958135033 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1226570419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613285244 + 613285245.

It is an arithmetic number, because the mean of its divisors is an integer number (613285245).

Almost surely, 2^1226570489 is an apocalyptic number.

It is an amenable number.

1226570489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226570489 is an equidigital number, since it uses as much as digits as its factorization.

1226570489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1226570489 is about 35022.4283709739. The cubic root of 1226570489 is about 1070.4445379716. Note that the first 3 decimals are identical.

The spelling of 1226570489 in words is "one billion, two hundred twenty-six million, five hundred seventy thousand, four hundred eighty-nine".