163983385 has 8 divisors (see below), whose sum is σ = 198619776. Its totient is φ = 129960240.

The previous prime is 163983373. The next prime is 163983403. The reversal of 163983385 is 583389361.

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

It is not a de Polignac number, because 163983385 - 2⁷ = 163983257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152721 + ... + 153790.

It is an arithmetic number, because the mean of its divisors is an integer number (24827472).

Almost surely, 2^163983385 is an apocalyptic number.

It is an amenable number.

163983385 is a deficient number, since it is larger than the sum of its proper divisors (34636391).

163983385 is a wasteful number, since it uses less digits than its factorization.

163983385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306623.

The product of its digits is 466560, while the sum is 46.

The square root of 163983385 is about 12805.5997516711. The cubic root of 163983385 is about 547.3518819803.

The spelling of 163983385 in words is "one hundred sixty-three million, nine hundred eighty-three thousand, three hundred eighty-five".