260542189 has 2 divisors, whose sum is σ = 260542190. Its totient is φ = 260542188.

The previous prime is 260542181. The next prime is 260542207. The reversal of 260542189 is 981245062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215208900 + 45333289 = 14670^2 + 6733^2 .

It is a cyclic number.

It is not a de Polignac number, because 260542189 - 2³ = 260542181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260542181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130271094 + 130271095.

It is an arithmetic number, because the mean of its divisors is an integer number (130271095).

Almost surely, 2^260542189 is an apocalyptic number.

It is an amenable number.

260542189 is a deficient number, since it is larger than the sum of its proper divisors (1).

260542189 is an equidigital number, since it uses as much as digits as its factorization.

260542189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 260542189 is about 16141.3193079128. The cubic root of 260542189 is about 638.6937787254.

The spelling of 260542189 in words is "two hundred sixty million, five hundred forty-two thousand, one hundred eighty-nine".