1969533316489 has 2 divisors, whose sum is σ = 1969533316490. Its totient is φ = 1969533316488.

The previous prime is 1969533316477. The next prime is 1969533316573. The reversal of 1969533316489 is 9846133359691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592189712400 + 377343604089 = 1261820^2 + 614283^2 .

It is an emirp because it is prime and its reverse (9846133359691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969533316489 is a prime.

It is a super-2 number, since 2×1969533316489² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1969533316189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984766658244 + 984766658245.

It is an arithmetic number, because the mean of its divisors is an integer number (984766658245).

Almost surely, 2^{1969533316489} is an apocalyptic number.

It is an amenable number.

1969533316489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969533316489 is an equidigital number, since it uses as much as digits as its factorization.

1969533316489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113374080, while the sum is 67.

The spelling of 1969533316489 in words is "one trillion, nine hundred sixty-nine billion, five hundred thirty-three million, three hundred sixteen thousand, four hundred eighty-nine".