260956187 has 2 divisors, whose sum is σ = 260956188. Its totient is φ = 260956186.

The previous prime is 260956159. The next prime is 260956193. The reversal of 260956187 is 781659062.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260956187 is a prime.

It is not a weakly prime, because it can be changed into another prime (260956117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130478093 + 130478094.

It is an arithmetic number, because the mean of its divisors is an integer number (130478094).

Almost surely, 2^260956187 is an apocalyptic number.

260956187 is a deficient number, since it is larger than the sum of its proper divisors (1).

260956187 is an equidigital number, since it uses as much as digits as its factorization.

260956187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 260956187 is about 16154.1383861845. The cubic root of 260956187 is about 639.0318916165.

The spelling of 260956187 in words is "two hundred sixty million, nine hundred fifty-six thousand, one hundred eighty-seven".