194709385 has 8 divisors (see below), whose sum is σ = 251624520. Its totient is φ = 143785344.

The previous prime is 194709379. The next prime is 194709407. The reversal of 194709385 is 583907491.

It is a happy number.

194709385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11269449 + 183439936 = 3357^2 + 13544^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 194709385 - 2⁵ = 194709353 is a prime.

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, 1497700 + ... + 1497829.

It is an arithmetic number, because the mean of its divisors is an integer number (31453065).

Almost surely, 2^194709385 is an apocalyptic number.

It is an amenable number.

194709385 is a deficient number, since it is larger than the sum of its proper divisors (56915135).

194709385 is a wasteful number, since it uses less digits than its factorization.

194709385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995547.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 194709385 is about 13953.8304776860. The cubic root of 194709385 is about 579.6007805679.

The spelling of 194709385 in words is "one hundred ninety-four million, seven hundred nine thousand, three hundred eighty-five".