194712985 has 16 divisors (see below), whose sum is σ = 247741200. Its totient is φ = 146405376.

The previous prime is 194712967. The next prime is 194712997. The reversal of 194712985 is 589217491.

It can be written as a sum of positive squares in 8 ways, for example, as 6255001 + 188457984 = 2501^2 + 13728^2 .

It is a cyclic number.

It is not a de Polignac number, because 194712985 - 2¹¹ = 194710937 is a prime.

It is a super-2 number, since 2×194712985² = 75826293055220450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94951 + ... + 96979.

It is an arithmetic number, because the mean of its divisors is an integer number (15483825).

Almost surely, 2^194712985 is an apocalyptic number.

It is an amenable number.

194712985 is a deficient number, since it is larger than the sum of its proper divisors (53028215).

194712985 is a wasteful number, since it uses less digits than its factorization.

194712985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 181440, while the sum is 46.

The square root of 194712985 is about 13953.9594739271. The cubic root of 194712985 is about 579.6043526435.

The spelling of 194712985 in words is "one hundred ninety-four million, seven hundred twelve thousand, nine hundred eighty-five".