168476393 has 2 divisors, whose sum is σ = 168476394. Its totient is φ = 168476392.

The previous prime is 168476389. The next prime is 168476417. The reversal of 168476393 is 393674861.

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., 163149529 + 5326864 = 12773^2 + 2308^2 .

It is an emirp because it is prime and its reverse (393674861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168476393 - 2² = 168476389 is a prime.

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 (168476303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84238196 + 84238197.

It is an arithmetic number, because the mean of its divisors is an integer number (84238197).

Almost surely, 2^168476393 is an apocalyptic number.

It is an amenable number.

168476393 is a deficient number, since it is larger than the sum of its proper divisors (1).

168476393 is an equidigital number, since it uses as much as digits as its factorization.

168476393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 168476393 is about 12979.8456462317. The cubic root of 168476393 is about 552.3059034429.

The spelling of 168476393 in words is "one hundred sixty-eight million, four hundred seventy-six thousand, three hundred ninety-three".