193145471 has 2 divisors, whose sum is σ = 193145472. Its totient is φ = 193145470.

The previous prime is 193145453. The next prime is 193145473. The reversal of 193145471 is 174541391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193145471 - 2¹⁴ = 193129087 is a prime.

It is a super-3 number, since 3×193145471³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 193145473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193145473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96572735 + 96572736.

It is an arithmetic number, because the mean of its divisors is an integer number (96572736).

Almost surely, 2^193145471 is an apocalyptic number.

193145471 is a deficient number, since it is larger than the sum of its proper divisors (1).

193145471 is an equidigital number, since it uses as much as digits as its factorization.

193145471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 193145471 is about 13897.6786191076. The cubic root of 193145471 is about 578.0448145950.

The spelling of 193145471 in words is "one hundred ninety-three million, one hundred forty-five thousand, four hundred seventy-one".