1351260689 has 2 divisors, whose sum is σ = 1351260690. Its totient is φ = 1351260688.

The previous prime is 1351260671. The next prime is 1351260697. The reversal of 1351260689 is 9860621531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1280566225 + 70694464 = 35785^2 + 8408^2 .

It is an emirp because it is prime and its reverse (9860621531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351260689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351260619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675630344 + 675630345.

It is an arithmetic number, because the mean of its divisors is an integer number (675630345).

Almost surely, 2^1351260689 is an apocalyptic number.

It is an amenable number.

1351260689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351260689 is an equidigital number, since it uses as much as digits as its factorization.

1351260689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1351260689 is about 36759.4979427086. The cubic root of 1351260689 is about 1105.5533735192.

The spelling of 1351260689 in words is "one billion, three hundred fifty-one million, two hundred sixty thousand, six hundred eighty-nine".