163940068 has 12 divisors (see below), whose sum is σ = 287164332. Its totient is φ = 81893120.

The previous prime is 163940057. The next prime is 163940071. The reversal of 163940068 is 860049361.

It can be written as a sum of positive squares in 2 ways, for example, as 79887844 + 84052224 = 8938^2 + 9168^2 .

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, 14293 + ... + 23068.

It is an arithmetic number, because the mean of its divisors is an integer number (23930361).

Almost surely, 2^163940068 is an apocalyptic number.

It is an amenable number.

163940068 is a deficient number, since it is larger than the sum of its proper divisors (123224264).

163940068 is a wasteful number, since it uses less digits than its factorization.

163940068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38462 (or 38460 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 163940068 is about 12803.9083095749. The cubic root of 163940068 is about 547.3036825251.

The spelling of 163940068 in words is "one hundred sixty-three million, nine hundred forty thousand, sixty-eight".