194489285 has 4 divisors (see below), whose sum is σ = 233387148. Its totient is φ = 155591424.

The previous prime is 194489261. The next prime is 194489291. The reversal of 194489285 is 582984491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77827684 + 116661601 = 8822^2 + 10801^2 .

It is a cyclic number.

It is not a de Polignac number, because 194489285 - 2²⁴ = 177712069 is a prime.

It is a super-2 number, since 2×194489285² = 75652163959622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19448924 + ... + 19448933.

It is an arithmetic number, because the mean of its divisors is an integer number (58346787).

Almost surely, 2^194489285 is an apocalyptic number.

It is an amenable number.

194489285 is a deficient number, since it is larger than the sum of its proper divisors (38897863).

194489285 is an equidigital number, since it uses as much as digits as its factorization.

194489285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38897862.

The product of its digits is 829440, while the sum is 50.

The square root of 194489285 is about 13945.9415243289. The cubic root of 194489285 is about 579.3823041437.

The spelling of 194489285 in words is "one hundred ninety-four million, four hundred eighty-nine thousand, two hundred eighty-five".