20185141 has 4 divisors (see below), whose sum is σ = 20228832. Its totient is φ = 20141452.

The previous prime is 20185133. The next prime is 20185147. The reversal of 20185141 is 14158102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20185141 - 2³ = 20185133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20185147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21145 + ... + 22078.

It is an arithmetic number, because the mean of its divisors is an integer number (5057208).

Almost surely, 2^20185141 is an apocalyptic number.

It is an amenable number.

20185141 is a deficient number, since it is larger than the sum of its proper divisors (43691).

20185141 is an equidigital number, since it uses as much as digits as its factorization.

20185141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43690.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 20185141 is about 4492.7876646910. The cubic root of 20185141 is about 272.2767736727.

The spelling of 20185141 in words is "twenty million, one hundred eighty-five thousand, one hundred forty-one".