1318586818589 has 2 divisors, whose sum is σ = 1318586818590. Its totient is φ = 1318586818588.

The previous prime is 1318586818567. The next prime is 1318586818597. The reversal of 1318586818589 is 9858186858131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1304723640025 + 13863178564 = 1142245^2 + 117742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318586818589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318586818489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659293409294 + 659293409295.

It is an arithmetic number, because the mean of its divisors is an integer number (659293409295).

Almost surely, 2^{1318586818589} is an apocalyptic number.

It is an amenable number.

1318586818589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318586818589 is an equidigital number, since it uses as much as digits as its factorization.

1318586818589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132710400, while the sum is 71.

The spelling of 1318586818589 in words is "one trillion, three hundred eighteen billion, five hundred eighty-six million, eight hundred eighteen thousand, five hundred eighty-nine".