1293827385469 has 2 divisors, whose sum is σ = 1293827385470. Its totient is φ = 1293827385468.

The previous prime is 1293827385451. The next prime is 1293827385523. The reversal of 1293827385469 is 9645837283921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124628435225 + 169198950244 = 1060485^2 + 411338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293827385469 - 2¹⁹ = 1293826861181 is a prime.

It is a super-2 number, since 2×1293827385469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1293827385769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646913692734 + 646913692735.

It is an arithmetic number, because the mean of its divisors is an integer number (646913692735).

Almost surely, 2^{1293827385469} is an apocalyptic number.

It is an amenable number.

1293827385469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293827385469 is an equidigital number, since it uses as much as digits as its factorization.

1293827385469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 67.

The spelling of 1293827385469 in words is "one trillion, two hundred ninety-three billion, eight hundred twenty-seven million, three hundred eighty-five thousand, four hundred sixty-nine".