163108397 has 2 divisors, whose sum is σ = 163108398. Its totient is φ = 163108396.

The previous prime is 163108367. The next prime is 163108409. The reversal of 163108397 is 793801361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 137641 = 12766^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 163108397 - 2⁶ = 163108333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163108397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163108307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81554198 + 81554199.

It is an arithmetic number, because the mean of its divisors is an integer number (81554199).

Almost surely, 2^163108397 is an apocalyptic number.

It is an amenable number.

163108397 is a deficient number, since it is larger than the sum of its proper divisors (1).

163108397 is an equidigital number, since it uses as much as digits as its factorization.

163108397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 163108397 is about 12771.3897834182. The cubic root of 163108397 is about 546.3766191789.

The spelling of 163108397 in words is "one hundred sixty-three million, one hundred eight thousand, three hundred ninety-seven".