194138112 has 208 divisors, whose sum is σ = 617535872. Its totient is φ = 53084160.

The previous prime is 194138071. The next prime is 194138117. The reversal of 194138112 is 211831491.

It is a self number, because there is not a number n which added to its sum of digits gives 194138112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194138117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3182562 + ... + 3182622.

Almost surely, 2^194138112 is an apocalyptic number.

194138112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194138112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308767936).

194138112 is an abundant number, since it is smaller than the sum of its proper divisors (423397760).

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

194138112 is an equidigital number, since it uses as much as digits as its factorization.

194138112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 110 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 194138112 is about 13933.3453269486. The cubic root of 194138112 is about 579.0333800306.

The spelling of 194138112 in words is "one hundred ninety-four million, one hundred thirty-eight thousand, one hundred twelve".