20161841 has 8 divisors (see below), whose sum is σ = 23386560. Its totient is φ = 17023248.

The previous prime is 20161837. The next prime is 20161853. The reversal of 20161841 is 14816102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20161841 - 2² = 20161837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20161871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21026 + ... + 21963.

It is an arithmetic number, because the mean of its divisors is an integer number (2923320).

Almost surely, 2^20161841 is an apocalyptic number.

It is an amenable number.

20161841 is a deficient number, since it is larger than the sum of its proper divisors (3224719).

20161841 is an equidigital number, since it uses as much as digits as its factorization.

20161841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43063.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 20161841 is about 4490.1938710929. The cubic root of 20161841 is about 272.1719689981.

Adding to 20161841 its reverse (14816102), we get a palindrome (34977943).

The spelling of 20161841 in words is "twenty million, one hundred sixty-one thousand, eight hundred forty-one".