20413163 has 4 divisors (see below), whose sum is σ = 21487560. Its totient is φ = 19338768.

The previous prime is 20413157. The next prime is 20413177. The reversal of 20413163 is 36131402.

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

It is a cyclic number.

It is not a de Polignac number, because 20413163 - 2⁴ = 20413147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537170 + ... + 537207.

It is an arithmetic number, because the mean of its divisors is an integer number (5371890).

Almost surely, 2^20413163 is an apocalyptic number.

20413163 is a deficient number, since it is larger than the sum of its proper divisors (1074397).

20413163 is a wasteful number, since it uses less digits than its factorization.

20413163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074396.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20413163 is about 4518.0928498649. The cubic root of 20413163 is about 273.2981977773.

Adding to 20413163 its reverse (36131402), we get a palindrome (56544565).

The spelling of 20413163 in words is "twenty million, four hundred thirteen thousand, one hundred sixty-three".