163805442 has 8 divisors (see below), whose sum is σ = 327610896. Its totient is φ = 54601812.

The previous prime is 163805437. The next prime is 163805443. The reversal of 163805442 is 244508361.

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

163805442 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (163805443) 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, 13650448 + ... + 13650459.

It is an arithmetic number, because the mean of its divisors is an integer number (40951362).

Almost surely, 2^163805442 is an apocalyptic number.

163805442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163805442 is a wasteful number, since it uses less digits than its factorization.

163805442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27300912.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 163805442 is about 12798.6500069343. The cubic root of 163805442 is about 547.1538279990.

The spelling of 163805442 in words is "one hundred sixty-three million, eight hundred five thousand, four hundred forty-two".