163117449 has 32 divisors (see below), whose sum is σ = 275097600. Its totient is φ = 94556880.

The previous prime is 163117399. The next prime is 163117453. The reversal of 163117449 is 944711361.

163117449 is a `hidden beast` number, since 1 + 631 + 17 + 4 + 4 + 9 = 666.

It is not a de Polignac number, because 163117449 - 2²⁵ = 129563017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163117049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5109 + ... + 18770.

It is an arithmetic number, because the mean of its divisors is an integer number (8596800).

Almost surely, 2^163117449 is an apocalyptic number.

It is an amenable number.

163117449 is a deficient number, since it is larger than the sum of its proper divisors (111980151).

163117449 is a wasteful number, since it uses less digits than its factorization.

163117449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922 (or 23916 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 163117449 is about 12771.7441643653. The cubic root of 163117449 is about 546.3867263831.

The spelling of 163117449 in words is "one hundred sixty-three million, one hundred seventeen thousand, four hundred forty-nine".