163845866 has 8 divisors (see below), whose sum is σ = 245825184. Its totient is φ = 81904140.

The previous prime is 163845839. The next prime is 163845883. The reversal of 163845866 is 668548361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163845866.

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 in 3 ways as a sum of consecutive naturals, for example, 7781 + ... + 19703.

It is an arithmetic number, because the mean of its divisors is an integer number (30728148).

Almost surely, 2^163845866 is an apocalyptic number.

163845866 is a deficient number, since it is larger than the sum of its proper divisors (81979318).

163845866 is a wasteful number, since it uses less digits than its factorization.

163845866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796.

The product of its digits is 829440, while the sum is 47.

The square root of 163845866 is about 12800.2291385740. The cubic root of 163845866 is about 547.1988332746.

The spelling of 163845866 in words is "one hundred sixty-three million, eight hundred forty-five thousand, eight hundred sixty-six".