1489789342309 has 2 divisors, whose sum is σ = 1489789342310. Its totient is φ = 1489789342308.

The previous prime is 1489789342253. The next prime is 1489789342313. The reversal of 1489789342309 is 9032439879841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1228971788100 + 260817554209 = 1108590^2 + 510703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489789342309 - 2²¹ = 1489787245157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489789342369) 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, 744894671154 + 744894671155.

It is an arithmetic number, because the mean of its divisors is an integer number (744894671155).

Almost surely, 2^{1489789342309} is an apocalyptic number.

It is an amenable number.

1489789342309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489789342309 is an equidigital number, since it uses as much as digits as its factorization.

1489789342309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 1489789342309 in words is "one trillion, four hundred eighty-nine billion, seven hundred eighty-nine million, three hundred forty-two thousand, three hundred nine".