193743911345 has 4 divisors (see below), whose sum is σ = 232492693620. Its totient is φ = 154995129072.

The previous prime is 193743911329. The next prime is 193743911353. The reversal of 193743911345 is 543119347391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543119347391 = 41 ⋅13246813351.

It can be written as a sum of positive squares in 2 ways, for example, as 114661472689 + 79082438656 = 338617^2 + 281216^2 .

It is a cyclic number.

It is not a de Polignac number, because 193743911345 - 2⁴ = 193743911329 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 193743911293 and 193743911302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19374391130 + ... + 19374391139.

It is an arithmetic number, because the mean of its divisors is an integer number (58123173405).

Almost surely, 2^193743911345 is an apocalyptic number.

It is an amenable number.

193743911345 is a deficient number, since it is larger than the sum of its proper divisors (38748782275).

193743911345 is an equidigital number, since it uses as much as digits as its factorization.

193743911345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38748782274.

The product of its digits is 1224720, while the sum is 50.

The spelling of 193743911345 in words is "one hundred ninety-three billion, seven hundred forty-three million, nine hundred eleven thousand, three hundred forty-five".