20163395 has 16 divisors (see below), whose sum is σ = 27967680. Its totient is φ = 13668864.

The previous prime is 20163359. The next prime is 20163397. The reversal of 20163395 is 59336102.

It is a cyclic number.

It is not a de Polignac number, because 20163395 - 2⁶ = 20163331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20163397) 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 15 ways as a sum of consecutive naturals, for example, 122 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (1747980).

Almost surely, 2^20163395 is an apocalyptic number.

20163395 is a deficient number, since it is larger than the sum of its proper divisors (7804285).

20163395 is an equidigital number, since it uses as much as digits as its factorization.

20163395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 20163395 is about 4490.3669115118. The cubic root of 20163395 is about 272.1789614874.

Adding to 20163395 its reverse (59336102), we get a palindrome (79499497).

The spelling of 20163395 in words is "twenty million, one hundred sixty-three thousand, three hundred ninety-five".