163807873 has 4 divisors (see below), whose sum is σ = 172429360. Its totient is φ = 155186388.

The previous prime is 163807867. The next prime is 163807879. The reversal of 163807873 is 378708361.

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 an interprime number because it is at equal distance from previous prime (163807867) and next prime (163807879).

It is a cyclic number.

It is not a de Polignac number, because 163807873 - 2²⁵ = 130253441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163807879) 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, 4310715 + ... + 4310752.

It is an arithmetic number, because the mean of its divisors is an integer number (43107340).

Almost surely, 2^163807873 is an apocalyptic number.

It is an amenable number.

163807873 is a deficient number, since it is larger than the sum of its proper divisors (8621487).

163807873 is an equidigital number, since it uses as much as digits as its factorization.

163807873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621486.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 163807873 is about 12798.7449775359. The cubic root of 163807873 is about 547.1565347149.

The spelling of 163807873 in words is "one hundred sixty-three million, eight hundred seven thousand, eight hundred seventy-three".