1298282729 has 2 divisors, whose sum is σ = 1298282730. Its totient is φ = 1298282728.

The previous prime is 1298282719. The next prime is 1298282779. The reversal of 1298282729 is 9272828921.

It is a happy number.

It is an a-pointer prime, because the next prime (1298282779) can be obtained adding 1298282729 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1287733225 + 10549504 = 35885^2 + 3248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298282729 - 2¹² = 1298278633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298282719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649141364 + 649141365.

It is an arithmetic number, because the mean of its divisors is an integer number (649141365).

Almost surely, 2^1298282729 is an apocalyptic number.

It is an amenable number.

1298282729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298282729 is an equidigital number, since it uses as much as digits as its factorization.

1298282729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 1298282729 is about 36031.6906208965. The cubic root of 1298282729 is about 1090.9121027482.

The spelling of 1298282729 in words is "one billion, two hundred ninety-eight million, two hundred eighty-two thousand, seven hundred twenty-nine".