1229358489449 has 2 divisors, whose sum is σ = 1229358489450. Its totient is φ = 1229358489448.

The previous prime is 1229358489427. The next prime is 1229358489451. The reversal of 1229358489449 is 9449848539221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157872842025 + 71485647424 = 1076045^2 + 267368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229358489449 is a prime.

It is a super-2 number, since 2×1229358489449² (a number of 25 digits) contains 22 as substring.

Together with 1229358489451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1229358483449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614679244724 + 614679244725.

It is an arithmetic number, because the mean of its divisors is an integer number (614679244725).

Almost surely, 2^{1229358489449} is an apocalyptic number.

It is an amenable number.

1229358489449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229358489449 is an equidigital number, since it uses as much as digits as its factorization.

1229358489449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179159040, while the sum is 68.

The spelling of 1229358489449 in words is "one trillion, two hundred twenty-nine billion, three hundred fifty-eight million, four hundred eighty-nine thousand, four hundred forty-nine".