194566045 has 4 divisors (see below), whose sum is σ = 233479260. Its totient is φ = 155652832.

The previous prime is 194565997. The next prime is 194566051. The reversal of 194566045 is 540665491.

It is a happy number.

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 26759929 + 167806116 = 5173^2 + 12954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194566045 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 194565989 and 194566007.

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, 19456600 + ... + 19456609.

It is an arithmetic number, because the mean of its divisors is an integer number (58369815).

Almost surely, 2^194566045 is an apocalyptic number.

It is an amenable number.

194566045 is a deficient number, since it is larger than the sum of its proper divisors (38913215).

194566045 is an equidigital number, since it uses as much as digits as its factorization.

194566045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38913214.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 194566045 is about 13948.6933079769. The cubic root of 194566045 is about 579.4585166304.

The spelling of 194566045 in words is "one hundred ninety-four million, five hundred sixty-six thousand, forty-five".