260387291 has 2 divisors, whose sum is σ = 260387292. Its totient is φ = 260387290.

The previous prime is 260387261. The next prime is 260387327. The reversal of 260387291 is 192783062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260387291 - 2⁶ = 260387227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260387261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130193645 + 130193646.

It is an arithmetic number, because the mean of its divisors is an integer number (130193646).

Almost surely, 2^260387291 is an apocalyptic number.

260387291 is a deficient number, since it is larger than the sum of its proper divisors (1).

260387291 is an equidigital number, since it uses as much as digits as its factorization.

260387291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 260387291 is about 16136.5204117864. The cubic root of 260387291 is about 638.5671811846.

The spelling of 260387291 in words is "two hundred sixty million, three hundred eighty-seven thousand, two hundred ninety-one".