163091016 has 128 divisors (see below), whose sum is σ = 500774400. Its totient is φ = 48767040.

The previous prime is 163091009. The next prime is 163091029. The reversal of 163091016 is 610190361.

163091016 is a `hidden beast` number, since 1 + 630 + 9 + 10 + 16 = 666.

163091016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196795 + ... + 197621.

It is an arithmetic number, because the mean of its divisors is an integer number (3912300).

Almost surely, 2^163091016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163091016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250387200).

163091016 is an abundant number, since it is smaller than the sum of its proper divisors (337683384).

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

163091016 is a wasteful number, since it uses less digits than its factorization.

163091016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 163091016 is about 12770.7092990170. The cubic root of 163091016 is about 546.3572110030.

The spelling of 163091016 in words is "one hundred sixty-three million, ninety-one thousand, sixteen".