1716649481 has 2 divisors, whose sum is σ = 1716649482. Its totient is φ = 1716649480.

The previous prime is 1716649423. The next prime is 1716649547. The reversal of 1716649481 is 1849466171.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081357456 + 635292025 = 32884^2 + 25205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1716649481 is a prime.

It is a super-2 number, since 2×1716649481² = 5893770881235138722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1716642481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858324740 + 858324741.

It is an arithmetic number, because the mean of its divisors is an integer number (858324741).

Almost surely, 2^1716649481 is an apocalyptic number.

It is an amenable number.

1716649481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1716649481 is an equidigital number, since it uses as much as digits as its factorization.

1716649481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 1716649481 is about 41432.4689223319. The cubic root of 1716649481 is about 1197.3667911152.

The spelling of 1716649481 in words is "one billion, seven hundred sixteen million, six hundred forty-nine thousand, four hundred eighty-one".