1489609517729 has 2 divisors, whose sum is σ = 1489609517730. Its totient is φ = 1489609517728.

The previous prime is 1489609517719. The next prime is 1489609517779. The reversal of 1489609517729 is 9277159069841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292935007329 + 196674510400 = 1137073^2 + 443480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489609517729 - 2²⁴ = 1489592740513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1489609517719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744804758864 + 744804758865.

It is an arithmetic number, because the mean of its divisors is an integer number (744804758865).

Almost surely, 2^{1489609517729} is an apocalyptic number.

It is an amenable number.

1489609517729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489609517729 is an equidigital number, since it uses as much as digits as its factorization.

1489609517729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 68.

The spelling of 1489609517729 in words is "one trillion, four hundred eighty-nine billion, six hundred nine million, five hundred seventeen thousand, seven hundred twenty-nine".