193768385 has 4 divisors (see below), whose sum is σ = 232522068. Its totient is φ = 155014704.

The previous prime is 193768381. The next prime is 193768409. The reversal of 193768385 is 583867391.

It is a happy number.

193768385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583867391 = 179 ⋅3261829.

It can be written as a sum of positive squares in 2 ways, for example, as 100240144 + 93528241 = 10012^2 + 9671^2 .

It is a cyclic number.

It is not a de Polignac number, because 193768385 - 2² = 193768381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (193768381) 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, 19376834 + ... + 19376843.

It is an arithmetic number, because the mean of its divisors is an integer number (58130517).

Almost surely, 2^193768385 is an apocalyptic number.

It is an amenable number.

193768385 is a deficient number, since it is larger than the sum of its proper divisors (38753683).

193768385 is an equidigital number, since it uses as much as digits as its factorization.

193768385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38753682.

The product of its digits is 1088640, while the sum is 50.

The square root of 193768385 is about 13920.0713001048. The cubic root of 193768385 is about 578.6655657278.

The spelling of 193768385 in words is "one hundred ninety-three million, seven hundred sixty-eight thousand, three hundred eighty-five".