181147163 has 16 divisors (see below), whose sum is σ = 189181440. Its totient is φ = 173343456.

The previous prime is 181147133. The next prime is 181147171. The reversal of 181147163 is 361741181.

It is a cyclic number.

It is not a de Polignac number, because 181147163 - 2¹⁴ = 181130779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181147123) 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 15 ways as a sum of consecutive naturals, for example, 493406 + ... + 493772.

It is an arithmetic number, because the mean of its divisors is an integer number (11823840).

Almost surely, 2^181147163 is an apocalyptic number.

181147163 is a deficient number, since it is larger than the sum of its proper divisors (8034277).

181147163 is a wasteful number, since it uses less digits than its factorization.

181147163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its digits is 4032, while the sum is 32.

The square root of 181147163 is about 13459.0922056430. The cubic root of 181147163 is about 565.8185467614.

The spelling of 181147163 in words is "one hundred eighty-one million, one hundred forty-seven thousand, one hundred sixty-three".