194442385 has 8 divisors (see below), whose sum is σ = 240857856. Its totient is φ = 150535920.

The previous prime is 194442373. The next prime is 194442401. The reversal of 194442385 is 583244491.

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

It is not a de Polignac number, because 194442385 - 2⁹ = 194441873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627079 + ... + 627388.

It is an arithmetic number, because the mean of its divisors is an integer number (30107232).

Almost surely, 2^194442385 is an apocalyptic number.

It is an amenable number.

194442385 is a deficient number, since it is larger than the sum of its proper divisors (46415471).

194442385 is a wasteful number, since it uses less digits than its factorization.

194442385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254503.

The product of its digits is 138240, while the sum is 40.

The square root of 194442385 is about 13944.2599301648. The cubic root of 194442385 is about 579.3357288023.

The spelling of 194442385 in words is "one hundred ninety-four million, four hundred forty-two thousand, three hundred eighty-five".