163806941 has 4 divisors (see below), whose sum is σ = 166897692. Its totient is φ = 160716192.

The previous prime is 163806919. The next prime is 163806949. The reversal of 163806941 is 149608361.

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 109725625 + 54081316 = 10475^2 + 7354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163806941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163806895 and 163806904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163806949) 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, 1545296 + ... + 1545401.

It is an arithmetic number, because the mean of its divisors is an integer number (41724423).

Almost surely, 2^163806941 is an apocalyptic number.

It is an amenable number.

163806941 is a deficient number, since it is larger than the sum of its proper divisors (3090751).

163806941 is an equidigital number, since it uses as much as digits as its factorization.

163806941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090750.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 163806941 is about 12798.7085676642. The cubic root of 163806941 is about 547.1554970138.

The spelling of 163806941 in words is "one hundred sixty-three million, eight hundred six thousand, nine hundred forty-one".