268201139 has 2 divisors, whose sum is σ = 268201140. Its totient is φ = 268201138.

The previous prime is 268201117. The next prime is 268201159. The reversal of 268201139 is 931102862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268201139 - 2⁸ = 268200883 is a prime.

It is not a weakly prime, because it can be changed into another prime (268201159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134100569 + 134100570.

It is an arithmetic number, because the mean of its divisors is an integer number (134100570).

Almost surely, 2^268201139 is an apocalyptic number.

268201139 is a deficient number, since it is larger than the sum of its proper divisors (1).

268201139 is an equidigital number, since it uses as much as digits as its factorization.

268201139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 268201139 is about 16376.8476514865. The cubic root of 268201139 is about 644.8918264999.

The spelling of 268201139 in words is "two hundred sixty-eight million, two hundred one thousand, one hundred thirty-nine".