168380617 has 2 divisors, whose sum is σ = 168380618. Its totient is φ = 168380616.

The previous prime is 168380609. The next prime is 168380633. The reversal of 168380617 is 716083861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116122176 + 52258441 = 10776^2 + 7229^2 .

It is a cyclic number.

It is not a de Polignac number, because 168380617 - 2³ = 168380609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168380617.

It is not a weakly prime, because it can be changed into another prime (168380117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84190308 + 84190309.

It is an arithmetic number, because the mean of its divisors is an integer number (84190309).

Almost surely, 2^168380617 is an apocalyptic number.

It is an amenable number.

168380617 is a deficient number, since it is larger than the sum of its proper divisors (1).

168380617 is an equidigital number, since it uses as much as digits as its factorization.

168380617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 168380617 is about 12976.1557096083. The cubic root of 168380617 is about 552.2012247275.

The spelling of 168380617 in words is "one hundred sixty-eight million, three hundred eighty thousand, six hundred seventeen".