20108163 has 8 divisors (see below), whose sum is σ = 27464976. Its totient is φ = 13078400.

The previous prime is 20108159. The next prime is 20108167. The reversal of 20108163 is 36180102.

It is an interprime number because it is at equal distance from previous prime (20108159) and next prime (20108167).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20108163 - 2² = 20108159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20108167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81618 + ... + 81863.

It is an arithmetic number, because the mean of its divisors is an integer number (3433122).

Almost surely, 2^20108163 is an apocalyptic number.

20108163 is a deficient number, since it is larger than the sum of its proper divisors (7356813).

20108163 is a wasteful number, since it uses less digits than its factorization.

20108163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163525.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20108163 is about 4484.2126399180. The cubic root of 20108163 is about 271.9302147601.

Adding to 20108163 its reverse (36180102), we get a palindrome (56288265).

The spelling of 20108163 in words is "twenty million, one hundred eight thousand, one hundred sixty-three".