194458117 has 6 divisors (see below), whose sum is σ = 226206438. Its totient is φ = 166678344.

The previous prime is 194458097. The next prime is 194458151. The reversal of 194458117 is 711854491.

It can be written as a sum of positive squares in only one way, i.e., 151437636 + 43020481 = 12306^2 + 6559^2 .

It is not a de Polignac number, because 194458117 - 2¹⁹ = 193933829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194458117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194458177) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1984218 + ... + 1984315.

It is an arithmetic number, because the mean of its divisors is an integer number (37701073).

Almost surely, 2^194458117 is an apocalyptic number.

It is an amenable number.

194458117 is a deficient number, since it is larger than the sum of its proper divisors (31748321).

194458117 is an equidigital number, since it uses as much as digits as its factorization.

194458117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968547 (or 3968540 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 194458117 is about 13944.8240218369. The cubic root of 194458117 is about 579.3513527345.

The spelling of 194458117 in words is "one hundred ninety-four million, four hundred fifty-eight thousand, one hundred seventeen".