268100191 has 2 divisors, whose sum is σ = 268100192. Its totient is φ = 268100190.

The previous prime is 268100159. The next prime is 268100197. The reversal of 268100191 is 191001862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268100191 - 2⁵ = 268100159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268100197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134050095 + 134050096.

It is an arithmetic number, because the mean of its divisors is an integer number (134050096).

Almost surely, 2^268100191 is an apocalyptic number.

268100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

268100191 is an equidigital number, since it uses as much as digits as its factorization.

268100191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 268100191 is about 16373.7653274987. The cubic root of 268100191 is about 644.8109062501.

The spelling of 268100191 in words is "two hundred sixty-eight million, one hundred thousand, one hundred ninety-one".