268409783 has 2 divisors, whose sum is σ = 268409784. Its totient is φ = 268409782.

The previous prime is 268409777. The next prime is 268409797. The reversal of 268409783 is 387904862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268409783 - 2²⁴ = 251632567 is a prime.

It is a super-2 number, since 2×268409783² = 144087623220214178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268409723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134204891 + 134204892.

It is an arithmetic number, because the mean of its divisors is an integer number (134204892).

Almost surely, 2^268409783 is an apocalyptic number.

268409783 is a deficient number, since it is larger than the sum of its proper divisors (1).

268409783 is an equidigital number, since it uses as much as digits as its factorization.

268409783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 268409783 is about 16383.2165034831. The cubic root of 268409783 is about 645.0590118874.

The spelling of 268409783 in words is "two hundred sixty-eight million, four hundred nine thousand, seven hundred eighty-three".