248785783 has 2 divisors, whose sum is σ = 248785784. Its totient is φ = 248785782.

The previous prime is 248785741. The next prime is 248785787. The reversal of 248785783 is 387587842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248785783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248785783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248785787) 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, 124392891 + 124392892.

It is an arithmetic number, because the mean of its divisors is an integer number (124392892).

Almost surely, 2^248785783 is an apocalyptic number.

248785783 is a deficient number, since it is larger than the sum of its proper divisors (1).

248785783 is an equidigital number, since it uses as much as digits as its factorization.

248785783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3010560, while the sum is 52.

The square root of 248785783 is about 15772.9446521567. The cubic root of 248785783 is about 628.9389909679.

The spelling of 248785783 in words is "two hundred forty-eight million, seven hundred eighty-five thousand, seven hundred eighty-three".