2788249769 has 2 divisors, whose sum is σ = 2788249770. Its totient is φ = 2788249768.

The previous prime is 2788249729. The next prime is 2788249777. The reversal of 2788249769 is 9679428872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1437319744 + 1350930025 = 37912^2 + 36755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2788249769 - 2¹² = 2788245673 is a prime.

It is a super-2 number, since 2×2788249769² = 15548673548657106722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2788249729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394124884 + 1394124885.

It is an arithmetic number, because the mean of its divisors is an integer number (1394124885).

Almost surely, 2^2788249769 is an apocalyptic number.

It is an amenable number.

2788249769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788249769 is an equidigital number, since it uses as much as digits as its factorization.

2788249769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 62.

The square root of 2788249769 is about 52803.8802456789. The cubic root of 2788249769 is about 1407.4853775349.

The spelling of 2788249769 in words is "two billion, seven hundred eighty-eight million, two hundred forty-nine thousand, seven hundred sixty-nine".