194168440 has 16 divisors (see below), whose sum is σ = 436879080. Its totient is φ = 77667360.

The previous prime is 194168437. The next prime is 194168449. The reversal of 194168440 is 44861491.

194168440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 194168440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194168449) 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, 2427066 + ... + 2427145.

Almost surely, 2^194168440 is an apocalyptic number.

194168440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194168440 is an abundant number, since it is smaller than the sum of its proper divisors (242710640).

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

194168440 is a wasteful number, since it uses less digits than its factorization.

194168440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854222 (or 4854218 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 194168440 is about 13934.4336088698. The cubic root of 194168440 is about 579.0635304045.

The spelling of 194168440 in words is "one hundred ninety-four million, one hundred sixty-eight thousand, four hundred forty".