194941440 has 120 divisors (see below), whose sum is σ = 675216828. Its totient is φ = 51978240.

The previous prime is 194941379. The next prime is 194941441. The reversal of 194941440 is 44149491.

It can be written as a sum of positive squares in 2 ways, for example, as 192432384 + 2509056 = 13872^2 + 1584^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 194941395 and 194941404.

It is not an unprimeable number, because it can be changed into a prime (194941441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18810 + ... + 27270.

Almost surely, 2^194941440 is an apocalyptic number.

194941440 is a gapful number since it is divisible by the number (10) 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 194941440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337608414).

194941440 is an abundant number, since it is smaller than the sum of its proper divisors (480275388).

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

194941440 is an equidigital number, since it uses as much as digits as its factorization.

194941440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490 (or 8471 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 194941440 is about 13962.1431019740. The cubic root of 194941440 is about 579.8309455774.

The spelling of 194941440 in words is "one hundred ninety-four million, nine hundred forty-one thousand, four hundred forty".