2666264849 has 2 divisors, whose sum is σ = 2666264850. Its totient is φ = 2666264848.

The previous prime is 2666264801. The next prime is 2666264863. The reversal of 2666264849 is 9484626662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1912487824 + 753777025 = 43732^2 + 27455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666264849 - 2²⁰ = 2665216273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2666264849.

It is not a weakly prime, because it can be changed into another prime (2666264749) 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, 1333132424 + 1333132425.

It is an arithmetic number, because the mean of its divisors is an integer number (1333132425).

Almost surely, 2^2666264849 is an apocalyptic number.

It is an amenable number.

2666264849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666264849 is an equidigital number, since it uses as much as digits as its factorization.

2666264849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 53.

The square root of 2666264849 is about 51635.8872200333. The cubic root of 2666264849 is about 1386.6528940002.

The spelling of 2666264849 in words is "two billion, six hundred sixty-six million, two hundred sixty-four thousand, eight hundred forty-nine".