1716416989 has 24 divisors (see below), whose sum is σ = 2023491200. Its totient is φ = 1426170240.

The previous prime is 1716416981. The next prime is 1716416993. The reversal of 1716416989 is 9896146171.

It is not a de Polignac number, because 1716416989 - 2³ = 1716416981 is a prime.

It is a super-2 number, since 2×1716416989² = 5892174560255652242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1716416981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2341267 + ... + 2341999.

Almost surely, 2^1716416989 is an apocalyptic number.

It is an amenable number.

1716416989 is a deficient number, since it is larger than the sum of its proper divisors (307074211).

1716416989 is an equidigital number, since it uses as much as digits as its factorization.

1716416989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 980 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The square root of 1716416989 is about 41429.6631533494. The cubic root of 1716416989 is about 1197.3127341142.

The spelling of 1716416989 in words is "one billion, seven hundred sixteen million, four hundred sixteen thousand, nine hundred eighty-nine".