260491871 has 2 divisors, whose sum is σ = 260491872. Its totient is φ = 260491870.

The previous prime is 260491849. The next prime is 260491883. The reversal of 260491871 is 178194062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260491871 - 2¹⁴ = 260475487 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 (260491801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130245935 + 130245936.

It is an arithmetic number, because the mean of its divisors is an integer number (130245936).

Almost surely, 2^260491871 is an apocalyptic number.

260491871 is a deficient number, since it is larger than the sum of its proper divisors (1).

260491871 is an equidigital number, since it uses as much as digits as its factorization.

260491871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 260491871 is about 16139.7605620406. The cubic root of 260491871 is about 638.6526595209.

The spelling of 260491871 in words is "two hundred sixty million, four hundred ninety-one thousand, eight hundred seventy-one".