19740593 has 2 divisors, whose sum is σ = 19740594. Its totient is φ = 19740592.

The previous prime is 19740577. The next prime is 19740607. The reversal of 19740593 is 39504791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 97969 = 4432^2 + 313^2 .

It is an emirp because it is prime and its reverse (39504791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19740593 - 2⁴ = 19740577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19740293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870296 + 9870297.

It is an arithmetic number, because the mean of its divisors is an integer number (9870297).

Almost surely, 2^19740593 is an apocalyptic number.

It is an amenable number.

19740593 is a deficient number, since it is larger than the sum of its proper divisors (1).

19740593 is an equidigital number, since it uses as much as digits as its factorization.

19740593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 19740593 is about 4443.0387124129. The cubic root of 19740593 is about 270.2630860459.

The spelling of 19740593 in words is "nineteen million, seven hundred forty thousand, five hundred ninety-three".