20084161 has 4 divisors (see below), whose sum is σ = 20242432. Its totient is φ = 19925892.

The previous prime is 20084149. The next prime is 20084167. The reversal of 20084161 is 16148002.

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 20084161 - 2⁹ = 20083649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20084167) 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, 78945 + ... + 79198.

It is an arithmetic number, because the mean of its divisors is an integer number (5060608).

Almost surely, 2^20084161 is an apocalyptic number.

It is an amenable number.

20084161 is a deficient number, since it is larger than the sum of its proper divisors (158271).

20084161 is a wasteful number, since it uses less digits than its factorization.

20084161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158270.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 20084161 is about 4481.5355627285. The cubic root of 20084161 is about 271.8219756724.

The spelling of 20084161 in words is "twenty million, eighty-four thousand, one hundred sixty-one".