163920093 has 16 divisors (see below), whose sum is σ = 226430400. Its totient is φ = 105356160.

The previous prime is 163920079. The next prime is 163920143. The reversal of 163920093 is 390029361.

It is not a de Polignac number, because 163920093 - 2⁴ = 163920077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163920073) 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, 101073 + ... + 102681.

It is an arithmetic number, because the mean of its divisors is an integer number (14151900).

Almost surely, 2^163920093 is an apocalyptic number.

It is an amenable number.

163920093 is a deficient number, since it is larger than the sum of its proper divisors (62510307).

163920093 is a wasteful number, since it uses less digits than its factorization.

163920093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 163920093 is about 12803.1282505488. The cubic root of 163920093 is about 547.2814531920.

The spelling of 163920093 in words is "one hundred sixty-three million, nine hundred twenty thousand, ninety-three".