1078668517 has 2 divisors, whose sum is σ = 1078668518. Its totient is φ = 1078668516.

The previous prime is 1078668497. The next prime is 1078668527. The reversal of 1078668517 is 7158668701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542004961 + 536663556 = 23281^2 + 23166^2 .

It is an emirp because it is prime and its reverse (7158668701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1078668517 - 2⁷ = 1078668389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078668527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539334258 + 539334259.

It is an arithmetic number, because the mean of its divisors is an integer number (539334259).

Almost surely, 2^1078668517 is an apocalyptic number.

It is an amenable number.

1078668517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078668517 is an equidigital number, since it uses as much as digits as its factorization.

1078668517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 1078668517 is about 32843.0893339832. The cubic root of 1078668517 is about 1025.5637642651.

The spelling of 1078668517 in words is "one billion, seventy-eight million, six hundred sixty-eight thousand, five hundred seventeen".