163640548 has 6 divisors (see below), whose sum is σ = 286370966. Its totient is φ = 81820272.

The previous prime is 163640531. The next prime is 163640551. The reversal of 163640548 is 845046361.

It is a happy number.

163640548 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 130370724 + 33269824 = 11418^2 + 5768^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20455065 + ... + 20455072.

Almost surely, 2^163640548 is an apocalyptic number.

It is an amenable number.

163640548 is a deficient number, since it is larger than the sum of its proper divisors (122730418).

163640548 is a wasteful number, since it uses less digits than its factorization.

163640548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40910141 (or 40910139 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 163640548 is about 12792.2065336673. The cubic root of 163640548 is about 546.9701697251.

The spelling of 163640548 in words is "one hundred sixty-three million, six hundred forty thousand, five hundred forty-eight".