1019912017 has 2 divisors, whose sum is σ = 1019912018. Its totient is φ = 1019912016.

The previous prime is 1019911999. The next prime is 1019912071. The reversal of 1019912017 is 7102199101.

It is a happy number.

Together with next prime (1019912071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566392401 + 453519616 = 23799^2 + 21296^2 .

It is an emirp because it is prime and its reverse (7102199101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1019912017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1019912017.

It is not a weakly prime, because it can be changed into another prime (1019912317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509956008 + 509956009.

It is an arithmetic number, because the mean of its divisors is an integer number (509956009).

Almost surely, 2^1019912017 is an apocalyptic number.

It is an amenable number.

1019912017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019912017 is an equidigital number, since it uses as much as digits as its factorization.

1019912017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

The square root of 1019912017 is about 31936.0613883428. The cubic root of 1019912017 is about 1006.5937656933.

The spelling of 1019912017 in words is "one billion, nineteen million, nine hundred twelve thousand, seventeen".