268863739 has 2 divisors, whose sum is σ = 268863740. Its totient is φ = 268863738.

The previous prime is 268863709. The next prime is 268863743. The reversal of 268863739 is 937368862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268863739 is a prime.

It is not a weakly prime, because it can be changed into another prime (268863709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134431869 + 134431870.

It is an arithmetic number, because the mean of its divisors is an integer number (134431870).

Almost surely, 2^268863739 is an apocalyptic number.

268863739 is a deficient number, since it is larger than the sum of its proper divisors (1).

268863739 is an equidigital number, since it uses as much as digits as its factorization.

268863739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 52.

The square root of 268863739 is about 16397.0649507770. The cubic root of 268863739 is about 645.4224654540.

It can be divided in two parts, 26886 and 3739, that added together give a square (30625 = 175²).

The spelling of 268863739 in words is "two hundred sixty-eight million, eight hundred sixty-three thousand, seven hundred thirty-nine".