163244365 has 4 divisors (see below), whose sum is σ = 195893244. Its totient is φ = 130595488.

The previous prime is 163244359. The next prime is 163244377. The reversal of 163244365 is 563442361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563442361 = 1597 ⋅352813.

It can be written as a sum of positive squares in 2 ways, for example, as 54125449 + 109118916 = 7357^2 + 10446^2 .

It is a cyclic number.

It is not a de Polignac number, because 163244365 - 2¹⁵ = 163211597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163244365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16324432 + ... + 16324441.

It is an arithmetic number, because the mean of its divisors is an integer number (48973311).

Almost surely, 2^163244365 is an apocalyptic number.

It is an amenable number.

163244365 is a deficient number, since it is larger than the sum of its proper divisors (32648879).

163244365 is an equidigital number, since it uses as much as digits as its factorization.

163244365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32648878.

The product of its digits is 51840, while the sum is 34.

The square root of 163244365 is about 12776.7118226874. The cubic root of 163244365 is about 546.5283978003.

The spelling of 163244365 in words is "one hundred sixty-three million, two hundred forty-four thousand, three hundred sixty-five".