163805001 has 4 divisors (see below), whose sum is σ = 218406672. Its totient is φ = 109203332.

The previous prime is 163804987. The next prime is 163805027. The reversal of 163805001 is 100508361.

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 163805001 - 2¹⁴ = 163788617 is a prime.

It is a super-2 number, since 2×163805001² = 53664156705220002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163805051) 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, 27300831 + ... + 27300836.

It is an arithmetic number, because the mean of its divisors is an integer number (54601668).

Almost surely, 2^163805001 is an apocalyptic number.

It is an amenable number.

163805001 is a deficient number, since it is larger than the sum of its proper divisors (54601671).

163805001 is an equidigital number, since it uses as much as digits as its factorization.

163805001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54601670.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 163805001 is about 12798.6327785432. The cubic root of 163805001 is about 547.1533369794.

The spelling of 163805001 in words is "one hundred sixty-three million, eight hundred five thousand, one".