20041853 has 4 divisors (see below), whose sum is σ = 21583548. Its totient is φ = 18500160.

The previous prime is 20041817. The next prime is 20041859. The reversal of 20041853 is 35814002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13271449 + 6770404 = 3643^2 + 2602^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041853 - 2¹⁰ = 20040829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041859) 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, 770828 + ... + 770853.

It is an arithmetic number, because the mean of its divisors is an integer number (5395887).

Almost surely, 2^20041853 is an apocalyptic number.

It is an amenable number.

20041853 is a deficient number, since it is larger than the sum of its proper divisors (1541695).

20041853 is a wasteful number, since it uses less digits than its factorization.

20041853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541694.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20041853 is about 4476.8128171725. The cubic root of 20041853 is about 271.6309739366.

Adding to 20041853 its reverse (35814002), we get a palindrome (55855855).

The spelling of 20041853 in words is "twenty million, forty-one thousand, eight hundred fifty-three".