163181057 has 16 divisors (see below), whose sum is σ = 184128000. Its totient is φ = 143567424.

The previous prime is 163181027. The next prime is 163181059. The reversal of 163181057 is 750181361.

It is not a de Polignac number, because 163181057 - 2¹⁰ = 163180033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163181059) 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, 27044 + ... + 32522.

It is an arithmetic number, because the mean of its divisors is an integer number (11508000).

Almost surely, 2^163181057 is an apocalyptic number.

It is an amenable number.

163181057 is a deficient number, since it is larger than the sum of its proper divisors (20946943).

163181057 is a wasteful number, since it uses less digits than its factorization.

163181057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 163181057 is about 12774.2341061999. The cubic root of 163181057 is about 546.4577387131.

The spelling of 163181057 in words is "one hundred sixty-three million, one hundred eighty-one thousand, fifty-seven".