163091946 has 8 divisors (see below), whose sum is σ = 326183904. Its totient is φ = 54363980.

The previous prime is 163091941. The next prime is 163091959. The reversal of 163091946 is 649190361.

163091946 is nontrivially palindromic in base 9.

163091946 is digitally balanced in base 3, 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.

163091946 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (163091941) 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, 13590990 + ... + 13591001.

It is an arithmetic number, because the mean of its divisors is an integer number (40772988).

Almost surely, 2^163091946 is an apocalyptic number.

163091946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163091946 is a wasteful number, since it uses less digits than its factorization.

163091946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27181996.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 163091946 is about 12770.7457104117. The cubic root of 163091946 is about 546.3582495054.

The spelling of 163091946 in words is "one hundred sixty-three million, ninety-one thousand, nine hundred forty-six".