2649149369 has 2 divisors, whose sum is σ = 2649149370. Its totient is φ = 2649149368.

The previous prime is 2649149353. The next prime is 2649149401. The reversal of 2649149369 is 9639419462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1506371344 + 1142778025 = 38812^2 + 33805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649149369 - 2⁴ = 2649149353 is a prime.

It is a super-2 number, since 2×2649149369² = 14035984758546196322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2649149369.

It is not a weakly prime, because it can be changed into another prime (2649149329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324574684 + 1324574685.

It is an arithmetic number, because the mean of its divisors is an integer number (1324574685).

Almost surely, 2^2649149369 is an apocalyptic number.

It is an amenable number.

2649149369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649149369 is an equidigital number, since it uses as much as digits as its factorization.

2649149369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The square root of 2649149369 is about 51469.8879831693. The cubic root of 2649149369 is about 1383.6794215633.

The spelling of 2649149369 in words is "two billion, six hundred forty-nine million, one hundred forty-nine thousand, three hundred sixty-nine".