2665586149 has 2 divisors, whose sum is σ = 2665586150. Its totient is φ = 2665586148.

The previous prime is 2665586141. The next prime is 2665586159. The reversal of 2665586149 is 9416855662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2493504225 + 172081924 = 49935^2 + 13118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665586149 - 2³ = 2665586141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2665586096 and 2665586105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665586141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332793074 + 1332793075.

It is an arithmetic number, because the mean of its divisors is an integer number (1332793075).

Almost surely, 2^2665586149 is an apocalyptic number.

It is an amenable number.

2665586149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665586149 is an equidigital number, since it uses as much as digits as its factorization.

2665586149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 52.

The square root of 2665586149 is about 51629.3148221047. The cubic root of 2665586149 is about 1386.5352261217.

The spelling of 2665586149 in words is "two billion, six hundred sixty-five million, five hundred eighty-six thousand, one hundred forty-nine".