1489789342187 has 2 divisors, whose sum is σ = 1489789342188. Its totient is φ = 1489789342186.

The previous prime is 1489789342147. The next prime is 1489789342193. The reversal of 1489789342187 is 7812439879841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1489789342187 - 2¹² = 1489789338091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1489789342187.

It is not a weakly prime, because it can be changed into another prime (1489789342147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744894671093 + 744894671094.

It is an arithmetic number, because the mean of its divisors is an integer number (744894671094).

Almost surely, 2^{1489789342187} is an apocalyptic number.

1489789342187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489789342187 is an equidigital number, since it uses as much as digits as its factorization.

1489789342187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195084288, while the sum is 71.

The spelling of 1489789342187 in words is "one trillion, four hundred eighty-nine billion, seven hundred eighty-nine million, three hundred forty-two thousand, one hundred eighty-seven".