1091000017 has 2 divisors, whose sum is σ = 1091000018. Its totient is φ = 1091000016.

The previous prime is 1090999997. The next prime is 1091000021. The reversal of 1091000017 is 7100001901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1021377681 + 69622336 = 31959^2 + 8344^2 .

It is an emirp because it is prime and its reverse (7100001901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091000017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1090999958 and 1091000003.

It is not a weakly prime, because it can be changed into another prime (1091000077) 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, 545500008 + 545500009.

It is an arithmetic number, because the mean of its divisors is an integer number (545500009).

Almost surely, 2^1091000017 is an apocalyptic number.

It is an amenable number.

1091000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091000017 is an equidigital number, since it uses as much as digits as its factorization.

1091000017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63, while the sum is 19.

The square root of 1091000017 is about 33030.2893871670. The cubic root of 1091000017 is about 1029.4570981890.

Adding to 1091000017 its reverse (7100001901), we get a palindrome (8191001918).

The spelling of 1091000017 in words is "one billion, ninety-one million, seventeen", and thus it is an aban number and an uban number.