194163888 has 80 divisors (see below), whose sum is σ = 531017600. Its totient is φ = 60963840.

The previous prime is 194163863. The next prime is 194163889. The reversal of 194163888 is 888361491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (194163889) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 191928 + ... + 192936.

It is an arithmetic number, because the mean of its divisors is an integer number (6637720).

Almost surely, 2^194163888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194163888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265508800).

194163888 is an abundant number, since it is smaller than the sum of its proper divisors (336853712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194163888 is a wasteful number, since it uses less digits than its factorization.

194163888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1244 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 194163888 is about 13934.2702715284. The cubic root of 194163888 is about 579.0590052651.

The spelling of 194163888 in words is "one hundred ninety-four million, one hundred sixty-three thousand, eight hundred eighty-eight".