163268969 has 4 divisors (see below), whose sum is σ = 172873044. Its totient is φ = 153664896.

The previous prime is 163268951. The next prime is 163268977. The reversal of 163268969 is 969862361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969862361 = 13 ⋅74604797.

It can be written as a sum of positive squares in 2 ways, for example, as 153264400 + 10004569 = 12380^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 163268969 - 2⁸ = 163268713 is a prime.

It is a super-2 number, since 2×163268969² = 53313512476645922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163268669) 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, 4802012 + ... + 4802045.

It is an arithmetic number, because the mean of its divisors is an integer number (43218261).

Almost surely, 2^163268969 is an apocalyptic number.

It is an amenable number.

163268969 is a deficient number, since it is larger than the sum of its proper divisors (9604075).

163268969 is an equidigital number, since it uses as much as digits as its factorization.

163268969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604074.

The product of its digits is 839808, while the sum is 50.

The square root of 163268969 is about 12777.6746319508. The cubic root of 163268969 is about 546.5558537949. Note that the first 3 decimals are identical.

The spelling of 163268969 in words is "one hundred sixty-three million, two hundred sixty-eight thousand, nine hundred sixty-nine".