163897318 has 16 divisors (see below), whose sum is σ = 266540400. Its totient is φ = 75135456.

The previous prime is 163897303. The next prime is 163897351. The reversal of 163897318 is 813798361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17280 + ... + 25027.

It is an arithmetic number, because the mean of its divisors is an integer number (16658775).

Almost surely, 2^163897318 is an apocalyptic number.

163897318 is a deficient number, since it is larger than the sum of its proper divisors (102643082).

163897318 is a wasteful number, since it uses less digits than its factorization.

163897318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471.

The product of its digits is 217728, while the sum is 46.

The square root of 163897318 is about 12802.2387885869. The cubic root of 163897318 is about 547.2561056539.

The spelling of 163897318 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, three hundred eighteen".