245243693 has 2 divisors, whose sum is σ = 245243694. Its totient is φ = 245243692.

The previous prime is 245243681. The next prime is 245243711. The reversal of 245243693 is 396342542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242674084 + 2569609 = 15578^2 + 1603^2 .

It is a cyclic number.

It is not a de Polignac number, because 245243693 - 2¹⁸ = 244981549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245243623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122621846 + 122621847.

It is an arithmetic number, because the mean of its divisors is an integer number (122621847).

Almost surely, 2^245243693 is an apocalyptic number.

It is an amenable number.

245243693 is a deficient number, since it is larger than the sum of its proper divisors (1).

245243693 is an equidigital number, since it uses as much as digits as its factorization.

245243693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 245243693 is about 15660.2583950585. The cubic root of 245243693 is about 625.9398706140.

The spelling of 245243693 in words is "two hundred forty-five million, two hundred forty-three thousand, six hundred ninety-three".