163942885 has 8 divisors (see below), whose sum is σ = 197751960. Its totient is φ = 130473984.

The previous prime is 163942879. The next prime is 163942979. The reversal of 163942885 is 588249361.

163942885 is digitally balanced in base 2, 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 4 ways, for example, as 77284 + 163865601 = 278^2 + 12801^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 163942885 - 2⁵ = 163942853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83980 + ... + 85909.

It is an arithmetic number, because the mean of its divisors is an integer number (24718995).

Almost surely, 2^163942885 is an apocalyptic number.

It is an amenable number.

163942885 is a deficient number, since it is larger than the sum of its proper divisors (33809075).

163942885 is a wasteful number, since it uses less digits than its factorization.

163942885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170087.

The product of its digits is 414720, while the sum is 46.

The square root of 163942885 is about 12804.0183145761. The cubic root of 163942885 is about 547.3068173000.

The spelling of 163942885 in words is "one hundred sixty-three million, nine hundred forty-two thousand, eight hundred eighty-five".