163845841 has 4 divisors (see below), whose sum is σ = 163926000. Its totient is φ = 163765684.

The previous prime is 163845839. The next prime is 163845883. The reversal of 163845841 is 148548361.

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 163845841 - 2¹ = 163845839 is a prime.

It is a super-2 number, since 2×163845841² = 53690919225994562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163845794 and 163845803.

It is not an unprimeable number, because it can be changed into a prime (163845811) 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, 36931 + ... + 41128.

It is an arithmetic number, because the mean of its divisors is an integer number (40981500).

Almost surely, 2^163845841 is an apocalyptic number.

It is an amenable number.

163845841 is a deficient number, since it is larger than the sum of its proper divisors (80159).

163845841 is an equidigital number, since it uses as much as digits as its factorization.

163845841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80158.

The product of its digits is 92160, while the sum is 40.

The square root of 163845841 is about 12800.2281620290. The cubic root of 163845841 is about 547.1988054436.

The spelling of 163845841 in words is "one hundred sixty-three million, eight hundred forty-five thousand, eight hundred forty-one".