194842443 has 6 divisors (see below), whose sum is σ = 259822164. Its totient is φ = 129878844.

The previous prime is 194842429. The next prime is 194842451. The reversal of 194842443 is 344248491.

It is not a de Polignac number, because 194842443 - 2⁵ = 194842411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194842463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20148 + ... + 28206.

It is an arithmetic number, because the mean of its divisors is an integer number (43303694).

Almost surely, 2^194842443 is an apocalyptic number.

194842443 is a deficient number, since it is larger than the sum of its proper divisors (64979721).

194842443 is an frugal number, since it uses more digits than its factorization.

194842443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16121 (or 8062 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 194842443 is about 13958.5974581976. The cubic root of 194842443 is about 579.7327772187.

Multiplying 194842443 by its product of digits (110592), we get a square (21548015456256 = 4641984²).

The spelling of 194842443 in words is "one hundred ninety-four million, eight hundred forty-two thousand, four hundred forty-three".