163728382 has 4 divisors (see below), whose sum is σ = 245592576. Its totient is φ = 81864190.

The previous prime is 163728361. The next prime is 163728407. The reversal of 163728382 is 283827361.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40932094 + ... + 40932097.

It is an arithmetic number, because the mean of its divisors is an integer number (61398144).

Almost surely, 2^163728382 is an apocalyptic number.

163728382 is a deficient number, since it is larger than the sum of its proper divisors (81864194).

163728382 is an equidigital number, since it uses as much as digits as its factorization.

163728382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81864193.

The product of its digits is 96768, while the sum is 40.

The square root of 163728382 is about 12795.6391790328. The cubic root of 163728382 is about 547.0680142292.

The spelling of 163728382 in words is "one hundred sixty-three million, seven hundred twenty-eight thousand, three hundred eighty-two".