1005920017 has 2 divisors, whose sum is σ = 1005920018. Its totient is φ = 1005920016.

The previous prime is 1005919997. The next prime is 1005920051. The reversal of 1005920017 is 7100295001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 969450496 + 36469521 = 31136^2 + 6039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005920017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1005919973 and 1005920000.

It is not a weakly prime, because it can be changed into another prime (1005920417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502960008 + 502960009.

It is an arithmetic number, because the mean of its divisors is an integer number (502960009).

Almost surely, 2^1005920017 is an apocalyptic number.

It is an amenable number.

1005920017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005920017 is an equidigital number, since it uses as much as digits as its factorization.

1005920017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1005920017 is about 31716.2421639134. The cubic root of 1005920017 is about 1001.9694576901.

The spelling of 1005920017 in words is "one billion, five million, nine hundred twenty thousand, seventeen".