345191593 has 2 divisors, whose sum is σ = 345191594. Its totient is φ = 345191592.

The previous prime is 345191591. The next prime is 345191617. The reversal of 345191593 is 395191543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333719824 + 11471769 = 18268^2 + 3387^2 .

It is a cyclic number.

It is not a de Polignac number, because 345191593 - 2¹ = 345191591 is a prime.

Together with 345191591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (345191591) 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, 172595796 + 172595797.

It is an arithmetic number, because the mean of its divisors is an integer number (172595797).

Almost surely, 2^345191593 is an apocalyptic number.

It is an amenable number.

345191593 is a deficient number, since it is larger than the sum of its proper divisors (1).

345191593 is an equidigital number, since it uses as much as digits as its factorization.

345191593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 40.

The square root of 345191593 is about 18579.3324153480. The cubic root of 345191593 is about 701.4877154984.

The spelling of 345191593 in words is "three hundred forty-five million, one hundred ninety-one thousand, five hundred ninety-three".