1617792017 has 2 divisors, whose sum is σ = 1617792018. Its totient is φ = 1617792016.

The previous prime is 1617791971. The next prime is 1617792019. The reversal of 1617792017 is 7102977161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1433076736 + 184715281 = 37856^2 + 13591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1617792017 - 2⁶ = 1617791953 is a prime.

Together with 1617792019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1617792019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808896008 + 808896009.

It is an arithmetic number, because the mean of its divisors is an integer number (808896009).

Almost surely, 2^1617792017 is an apocalyptic number.

It is an amenable number.

1617792017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617792017 is an equidigital number, since it uses as much as digits as its factorization.

1617792017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 41.

The square root of 1617792017 is about 40221.7853532137. The cubic root of 1617792017 is about 1173.9264719014.

The spelling of 1617792017 in words is "one billion, six hundred seventeen million, seven hundred ninety-two thousand, seventeen".