163688136 has 16 divisors (see below), whose sum is σ = 409220400. Its totient is φ = 54562704.

The previous prime is 163688123. The next prime is 163688137. The reversal of 163688136 is 631886361.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (163688137) 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 3 ways as a sum of consecutive naturals, for example, 3410146 + ... + 3410193.

It is an arithmetic number, because the mean of its divisors is an integer number (25576275).

Almost surely, 2^163688136 is an apocalyptic number.

It is an amenable number.

163688136 is an abundant number, since it is smaller than the sum of its proper divisors (245532264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163688136 is a wasteful number, since it uses less digits than its factorization.

163688136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820348 (or 6820344 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 163688136 is about 12794.0664372200. The cubic root of 163688136 is about 547.0231857083.

The spelling of 163688136 in words is "one hundred sixty-three million, six hundred eighty-eight thousand, one hundred thirty-six".