163899161 has 8 divisors (see below), whose sum is σ = 167184000. Its totient is φ = 160621552.

The previous prime is 163899157. The next prime is 163899163. The reversal of 163899161 is 161998361.

It is a happy number.

163899161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 163899161 - 2² = 163899157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163899163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78416 + ... + 80478.

It is an arithmetic number, because the mean of its divisors is an integer number (20898000).

Almost surely, 2^163899161 is an apocalyptic number.

It is an amenable number.

163899161 is a deficient number, since it is larger than the sum of its proper divisors (3284839).

163899161 is a wasteful number, since it uses less digits than its factorization.

163899161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615.

The product of its digits is 69984, while the sum is 44.

The square root of 163899161 is about 12802.3107679825. The cubic root of 163899161 is about 547.2581569164.

The spelling of 163899161 in words is "one hundred sixty-three million, eight hundred ninety-nine thousand, one hundred sixty-one".