2810989009 has 2 divisors, whose sum is σ = 2810989010. Its totient is φ = 2810989008.

The previous prime is 2810988989. The next prime is 2810989043. The reversal of 2810989009 is 9009890182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2780241984 + 30747025 = 52728^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2810989009 - 2¹⁹ = 2810464721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2810989009.

It is not a weakly prime, because it can be changed into another prime (2810989099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1405494504 + 1405494505.

It is an arithmetic number, because the mean of its divisors is an integer number (1405494505).

Almost surely, 2^2810989009 is an apocalyptic number.

It is an amenable number.

2810989009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2810989009 is an equidigital number, since it uses as much as digits as its factorization.

2810989009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 2810989009 is about 53018.7609153590. The cubic root of 2810989009 is about 1411.3012163562.

The spelling of 2810989009 in words is "two billion, eight hundred ten million, nine hundred eighty-nine thousand, nine".