163930545 has 48 divisors (see below), whose sum is σ = 298771200. Its totient is φ = 82988928.

The previous prime is 163930523. The next prime is 163930549. The reversal of 163930545 is 545039361.

It is not a de Polignac number, because 163930545 - 2⁵ = 163930513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163930549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153684 + ... + 154746.

It is an arithmetic number, because the mean of its divisors is an integer number (6224400).

Almost surely, 2^163930545 is an apocalyptic number.

163930545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163930545 is a deficient number, since it is larger than the sum of its proper divisors (134840655).

163930545 is a wasteful number, since it uses less digits than its factorization.

163930545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 163930545 is about 12803.5364255349. The cubic root of 163930545 is about 547.2930850062.

The spelling of 163930545 in words is "one hundred sixty-three million, nine hundred thirty thousand, five hundred forty-five".