268385387 has 2 divisors, whose sum is σ = 268385388. Its totient is φ = 268385386.

The previous prime is 268385353. The next prime is 268385399. The reversal of 268385387 is 783583862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268385387 - 2²⁴ = 251608171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268385687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134192693 + 134192694.

It is an arithmetic number, because the mean of its divisors is an integer number (134192694).

Almost surely, 2^268385387 is an apocalyptic number.

268385387 is a deficient number, since it is larger than the sum of its proper divisors (1).

268385387 is an equidigital number, since it uses as much as digits as its factorization.

268385387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 50.

The square root of 268385387 is about 16382.4719441237. The cubic root of 268385387 is about 645.0394679693.

The spelling of 268385387 in words is "two hundred sixty-eight million, three hundred eighty-five thousand, three hundred eighty-seven".