245236993 has 2 divisors, whose sum is σ = 245236994. Its totient is φ = 245236992.

The previous prime is 245236991. The next prime is 245237039. The reversal of 245236993 is 399632542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212197489 + 33039504 = 14567^2 + 5748^2 .

It is a cyclic number.

It is not a de Polignac number, because 245236993 - 2¹ = 245236991 is a prime.

Together with 245236991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (245236991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122618496 + 122618497.

It is an arithmetic number, because the mean of its divisors is an integer number (122618497).

Almost surely, 2^245236993 is an apocalyptic number.

It is an amenable number.

245236993 is a deficient number, since it is larger than the sum of its proper divisors (1).

245236993 is an equidigital number, since it uses as much as digits as its factorization.

245236993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 43.

The square root of 245236993 is about 15660.0444763098. The cubic root of 245236993 is about 625.9341703854.

The spelling of 245236993 in words is "two hundred forty-five million, two hundred thirty-six thousand, nine hundred ninety-three".