163505473 has 16 divisors (see below), whose sum is σ = 176463360. Its totient is φ = 150944256.

The previous prime is 163505471. The next prime is 163505483. The reversal of 163505473 is 374505361.

It is a cyclic number.

It is not a de Polignac number, because 163505473 - 2¹ = 163505471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163505471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445336 + ... + 445702.

It is an arithmetic number, because the mean of its divisors is an integer number (11028960).

Almost surely, 2^163505473 is an apocalyptic number.

It is an amenable number.

163505473 is a deficient number, since it is larger than the sum of its proper divisors (12957887).

163505473 is a wasteful number, since it uses less digits than its factorization.

163505473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 163505473 is about 12786.9258619889. The cubic root of 163505473 is about 546.8196317844.

The spelling of 163505473 in words is "one hundred sixty-three million, five hundred five thousand, four hundred seventy-three".