193794842 has 4 divisors (see below), whose sum is σ = 290692266. Its totient is φ = 96897420.

The previous prime is 193794829. The next prime is 193794847. The reversal of 193794842 is 248497391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248497391 = 263 ⋅944857.

It can be written as a sum of positive squares in only one way, i.e., 143256961 + 50537881 = 11969^2 + 7109^2 .

It is not an unprimeable number, because it can be changed into a prime (193794847) 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 as a sum of consecutive naturals, namely, 48448709 + ... + 48448712.

Almost surely, 2^193794842 is an apocalyptic number.

193794842 is a deficient number, since it is larger than the sum of its proper divisors (96897424).

193794842 is an equidigital number, since it uses as much as digits as its factorization.

193794842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96897423.

The product of its digits is 435456, while the sum is 47.

The square root of 193794842 is about 13921.0215860762. The cubic root of 193794842 is about 578.6919013933.

The spelling of 193794842 in words is "one hundred ninety-three million, seven hundred ninety-four thousand, eight hundred forty-two".