194634443 has 4 divisors (see below), whose sum is σ = 194887008. Its totient is φ = 194381880.

The previous prime is 194634439. The next prime is 194634463. The reversal of 194634443 is 344436491.

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

It is a cyclic number.

It is not a de Polignac number, because 194634443 - 2² = 194634439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194634397 and 194634406.

It is not an unprimeable number, because it can be changed into a prime (194634403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125123 + ... + 126668.

It is an arithmetic number, because the mean of its divisors is an integer number (48721752).

Almost surely, 2^194634443 is an apocalyptic number.

194634443 is a deficient number, since it is larger than the sum of its proper divisors (252565).

194634443 is an equidigital number, since it uses as much as digits as its factorization.

194634443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252564.

The product of its digits is 124416, while the sum is 38.

The square root of 194634443 is about 13951.1448634153. The cubic root of 194634443 is about 579.5264098749.

The spelling of 194634443 in words is "one hundred ninety-four million, six hundred thirty-four thousand, four hundred forty-three".