194770944 has 72 divisors (see below), whose sum is σ = 562587480. Its totient is φ = 64917504.

The previous prime is 194770897. The next prime is 194770949. The reversal of 194770944 is 449077491.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×194770944² = 75871441253302272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194770944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194770949) 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 5 ways as a sum of consecutive naturals, for example, 13149 + ... + 23715.

It is an arithmetic number, because the mean of its divisors is an integer number (7813715).

Almost surely, 2^194770944 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 194770944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281293740).

194770944 is an abundant number, since it is smaller than the sum of its proper divisors (367816536).

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

194770944 is a wasteful number, since it uses less digits than its factorization.

194770944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10595 (or 10572 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 194770944 is about 13956.0361134528. The cubic root of 194770944 is about 579.6618560094.

The spelling of 194770944 in words is "one hundred ninety-four million, seven hundred seventy thousand, nine hundred forty-four".