1617916289 has 12 divisors (see below), whose sum is σ = 1779487332. Its totient is φ = 1469909760.

The previous prime is 1617916283. The next prime is 1617916327. The reversal of 1617916289 is 9826197161.

It can be written as a sum of positive squares in 2 ways, for example, as 900480064 + 717436225 = 30008^2 + 26785^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1617916289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617916283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255449 + ... + 261705.

It is an arithmetic number, because the mean of its divisors is an integer number (148290611).

Almost surely, 2^1617916289 is an apocalyptic number.

It is an amenable number.

1617916289 is a deficient number, since it is larger than the sum of its proper divisors (161571043).

1617916289 is a wasteful number, since it uses less digits than its factorization.

1617916289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416 (or 8405 counting only the distinct ones).

The product of its digits is 326592, while the sum is 50.

The square root of 1617916289 is about 40223.3301580066. The cubic root of 1617916289 is about 1173.9565298350.

The spelling of 1617916289 in words is "one billion, six hundred seventeen million, nine hundred sixteen thousand, two hundred eighty-nine".