194971113 has 24 divisors (see below), whose sum is σ = 305473896. Its totient is φ = 119347200.

The previous prime is 194971111. The next prime is 194971123. The reversal of 194971113 is 311179491.

It can be written as a sum of positive squares in 4 ways, for example, as 4613904 + 190357209 = 2148^2 + 13797^2 .

It is not a de Polignac number, because 194971113 - 2¹ = 194971111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194971111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9268 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (12728079).

Almost surely, 2^194971113 is an apocalyptic number.

It is an amenable number.

194971113 is a deficient number, since it is larger than the sum of its proper divisors (110502783).

194971113 is a wasteful number, since it uses less digits than its factorization.

194971113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31145 (or 31142 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 194971113 is about 13963.2056849421. The cubic root of 194971113 is about 579.8603637294.

The spelling of 194971113 in words is "one hundred ninety-four million, nine hundred seventy-one thousand, one hundred thirteen".