163118081 has 8 divisors (see below), whose sum is σ = 187059264. Its totient is φ = 139336560.

The previous prime is 163118051. The next prime is 163118117. The reversal of 163118081 is 180811361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163118081 is a prime.

It is a super-2 number, since 2×163118081² = 53215016698245122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163118041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37715 + ... + 41816.

It is an arithmetic number, because the mean of its divisors is an integer number (23382408).

Almost surely, 2^163118081 is an apocalyptic number.

It is an amenable number.

163118081 is a deficient number, since it is larger than the sum of its proper divisors (23941183).

163118081 is an equidigital number, since it uses as much as digits as its factorization.

163118081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79831.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 163118081 is about 12771.7689064593. The cubic root of 163118081 is about 546.3874320423.

The spelling of 163118081 in words is "one hundred sixty-three million, one hundred eighteen thousand, eighty-one".