398368163 has 2 divisors, whose sum is σ = 398368164. Its totient is φ = 398368162.

The previous prime is 398368147. The next prime is 398368199. The reversal of 398368163 is 361863893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398368163 - 2⁴ = 398368147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (398368133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199184081 + 199184082.

It is an arithmetic number, because the mean of its divisors is an integer number (199184082).

Almost surely, 2^398368163 is an apocalyptic number.

398368163 is a deficient number, since it is larger than the sum of its proper divisors (1).

398368163 is an equidigital number, since it uses as much as digits as its factorization.

398368163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 398368163 is about 19959.1623822244. The cubic root of 398368163 is about 735.8029776221.

The spelling of 398368163 in words is "three hundred ninety-eight million, three hundred sixty-eight thousand, one hundred sixty-three".