194081305 has 8 divisors (see below), whose sum is σ = 254070144. Its totient is φ = 141150000.

The previous prime is 194081281. The next prime is 194081323. The reversal of 194081305 is 503180491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 194081305 - 2¹¹ = 194079257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1764321 + ... + 1764430.

It is an arithmetic number, because the mean of its divisors is an integer number (31758768).

Almost surely, 2^194081305 is an apocalyptic number.

It is an amenable number.

194081305 is a deficient number, since it is larger than the sum of its proper divisors (59988839).

194081305 is a wasteful number, since it uses less digits than its factorization.

194081305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528767.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 194081305 is about 13931.3066508494. The cubic root of 194081305 is about 578.9768972897.

The spelling of 194081305 in words is "one hundred ninety-four million, eighty-one thousand, three hundred five".