1358972717 has 2 divisors, whose sum is σ = 1358972718. Its totient is φ = 1358972716.

The previous prime is 1358972633. The next prime is 1358972723. The reversal of 1358972717 is 7172798531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830938276 + 528034441 = 28826^2 + 22979^2 .

It is an emirp because it is prime and its reverse (7172798531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1358972717 - 2¹⁰ = 1358971693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1358972737) 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, 679486358 + 679486359.

It is an arithmetic number, because the mean of its divisors is an integer number (679486359).

Almost surely, 2^1358972717 is an apocalyptic number.

It is an amenable number.

1358972717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358972717 is an equidigital number, since it uses as much as digits as its factorization.

1358972717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 50.

The square root of 1358972717 is about 36864.2471373009. The cubic root of 1358972717 is about 1107.6526204581.

The spelling of 1358972717 in words is "one billion, three hundred fifty-eight million, nine hundred seventy-two thousand, seven hundred seventeen".