1600320017 has 2 divisors, whose sum is σ = 1600320018. Its totient is φ = 1600320016.

The previous prime is 1600319971. The next prime is 1600320091. The reversal of 1600320017 is 7100230061.

It is a happy number.

It is a Cunningham number, because it is equal to 40004²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1600320016 + 1 = 40004^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600320017 - 2³⁰ = 526578193 is a prime.

It is a super-2 number, since 2×1600320017² = 5122048313621760578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1600326017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800160008 + 800160009.

It is an arithmetic number, because the mean of its divisors is an integer number (800160009).

Almost surely, 2^1600320017 is an apocalyptic number.

It is an amenable number.

1600320017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600320017 is an equidigital number, since it uses as much as digits as its factorization.

1600320017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1600320017 is about 40004.0000124988. Note that the first 4 decimals coincide. The cubic root of 1600320017 is about 1169.6850680356.

Adding to 1600320017 its reverse (7100230061), we get a palindrome (8700550078).

The spelling of 1600320017 in words is "one billion, six hundred million, three hundred twenty thousand, seventeen".