20386163 has 4 divisors (see below), whose sum is σ = 23298480. Its totient is φ = 17473848.

The previous prime is 20386153. The next prime is 20386169. The reversal of 20386163 is 36168302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20386163 - 2⁶ = 20386099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20386169) 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 3 ways as a sum of consecutive naturals, for example, 1456148 + ... + 1456161.

It is an arithmetic number, because the mean of its divisors is an integer number (5824620).

Almost surely, 2^20386163 is an apocalyptic number.

20386163 is a deficient number, since it is larger than the sum of its proper divisors (2912317).

20386163 is an equidigital number, since it uses as much as digits as its factorization.

20386163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912316.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20386163 is about 4515.1038747741. The cubic root of 20386163 is about 273.1776496275.

The spelling of 20386163 in words is "twenty million, three hundred eighty-six thousand, one hundred sixty-three".