163309266 has 48 divisors (see below), whose sum is σ = 368161560. Its totient is φ = 52254720.

The previous prime is 163309253. The next prime is 163309291. The reversal of 163309266 is 662903361.

163309266 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 141491025 + 21818241 = 11895^2 + 4671^2 .

It is a super-3 number, since 3×163309266³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 163309266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99936 + ... + 101556.

Almost surely, 2^163309266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163309266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184080780).

163309266 is an abundant number, since it is smaller than the sum of its proper divisors (204852294).

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

163309266 is a wasteful number, since it uses less digits than its factorization.

163309266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 163309266 is about 12779.2513865250. The cubic root of 163309266 is about 546.6008158997.

The spelling of 163309266 in words is "one hundred sixty-three million, three hundred nine thousand, two hundred sixty-six".