163868894 has 8 divisors (see below), whose sum is σ = 280918128. Its totient is φ = 70229520.

The previous prime is 163868869. The next prime is 163868897. The reversal of 163868894 is 498868361.

163868894 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163868897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5852447 + ... + 5852474.

It is an arithmetic number, because the mean of its divisors is an integer number (35114766).

Almost surely, 2^163868894 is an apocalyptic number.

163868894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

163868894 is a deficient number, since it is larger than the sum of its proper divisors (117049234).

163868894 is a wasteful number, since it uses less digits than its factorization.

163868894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11704930.

The product of its digits is 1990656, while the sum is 53.

The square root of 163868894 is about 12801.1286221177. The cubic root of 163868894 is about 547.2244677418.

The spelling of 163868894 in words is "one hundred sixty-three million, eight hundred sixty-eight thousand, eight hundred ninety-four".