163295081 has 4 divisors (see below), whose sum is σ = 172900692. Its totient is φ = 153689472.

The previous prime is 163295071. The next prime is 163295089. The reversal of 163295081 is 180592361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134189056 + 29106025 = 11584^2 + 5395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163295081 is a prime.

It is a super-2 number, since 2×163295081² = 53330566957593122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163295089) 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, 4802780 + ... + 4802813.

It is an arithmetic number, because the mean of its divisors is an integer number (43225173).

Almost surely, 2^163295081 is an apocalyptic number.

It is an amenable number.

163295081 is a deficient number, since it is larger than the sum of its proper divisors (9605611).

163295081 is an equidigital number, since it uses as much as digits as its factorization.

163295081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605610.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 163295081 is about 12778.6963732612. The cubic root of 163295081 is about 546.5849895737.

The spelling of 163295081 in words is "one hundred sixty-three million, two hundred ninety-five thousand, eighty-one".