20416853 has 2 divisors, whose sum is σ = 20416854. Its totient is φ = 20416852.

The previous prime is 20416829. The next prime is 20416889. The reversal of 20416853 is 35861402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 7006609 = 3662^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416853 - 2⁶ = 20416789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20416453) 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 as a sum of consecutive naturals, namely, 10208426 + 10208427.

It is an arithmetic number, because the mean of its divisors is an integer number (10208427).

Almost surely, 2^20416853 is an apocalyptic number.

It is an amenable number.

20416853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416853 is an equidigital number, since it uses as much as digits as its factorization.

20416853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20416853 is about 4518.5011895539. The cubic root of 20416853 is about 273.3146644332.

The spelling of 20416853 in words is "twenty million, four hundred sixteen thousand, eight hundred fifty-three".