163798 has 4 divisors (see below), whose sum is σ = 245700. Its totient is φ = 81898.

The previous prime is 163789. The next prime is 163811. The reversal of 163798 is 897361.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

163798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40948 + ... + 40951.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2¹⁶³⁷⁹⁸ is an apocalyptic number.

163798 is a deficient number, since it is larger than the sum of its proper divisors (81902).

163798 is an equidigital number, since it uses as much as digits as its factorization.

163798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81901.

The product of its digits is 9072, while the sum is 34.

The square root of 163798 is about 404.7196560584. The cubic root of 163798 is about 54.7145541786.

It can be divided in two parts, 163 and 798, that added together give a square (961 = 31²).

The spelling of 163798 in words is "one hundred sixty-three thousand, seven hundred ninety-eight".