163801 has 4 divisors (see below), whose sum is σ = 178704. Its totient is φ = 148900.

The previous prime is 163789. The next prime is 163811. The reversal of 163801 is 108361.

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, and also an emirpimes, since its reverse is a distinct semiprime: 108361 = 11 ⋅9851.

It is a cyclic number.

It is not a de Polignac number, because 163801 - 2⁷ = 163673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163811) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7435 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (44676).

2¹⁶³⁸⁰¹ is an apocalyptic number.

163801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163801 is a deficient number, since it is larger than the sum of its proper divisors (14903).

163801 is a wasteful number, since it uses less digits than its factorization.

163801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14902.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 163801 is about 404.7233623106. The cubic root of 163801 is about 54.7148882133.

The spelling of 163801 in words is "one hundred sixty-three thousand, eight hundred one".