1331415257989 has 2 divisors, whose sum is σ = 1331415257990. Its totient is φ = 1331415257988.

The previous prime is 1331415257981. The next prime is 1331415258059. The reversal of 1331415257989 is 9897525141331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328002712100 + 3412545889 = 1152390^2 + 58417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331415257989 - 2³ = 1331415257981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331415257981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665707628994 + 665707628995.

It is an arithmetic number, because the mean of its divisors is an integer number (665707628995).

Almost surely, 2^{1331415257989} is an apocalyptic number.

It is an amenable number.

1331415257989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331415257989 is an equidigital number, since it uses as much as digits as its factorization.

1331415257989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 58.

The spelling of 1331415257989 in words is "one trillion, three hundred thirty-one billion, four hundred fifteen million, two hundred fifty-seven thousand, nine hundred eighty-nine".