1249456885169 has 2 divisors, whose sum is σ = 1249456885170. Its totient is φ = 1249456885168.

The previous prime is 1249456885163. The next prime is 1249456885217. The reversal of 1249456885169 is 9615886549421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189364736400 + 60092148769 = 1090580^2 + 245137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249456885169 - 2⁸ = 1249456884913 is a prime.

It is a super-2 number, since 2×1249456885169² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1249456885099 and 1249456885108.

It is not a weakly prime, because it can be changed into another prime (1249456885163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624728442584 + 624728442585.

It is an arithmetic number, because the mean of its divisors is an integer number (624728442585).

Almost surely, 2^{1249456885169} is an apocalyptic number.

It is an amenable number.

1249456885169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249456885169 is an equidigital number, since it uses as much as digits as its factorization.

1249456885169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 149299200, while the sum is 68.

The spelling of 1249456885169 in words is "one trillion, two hundred forty-nine billion, four hundred fifty-six million, eight hundred eighty-five thousand, one hundred sixty-nine".