1090676809 has 2 divisors, whose sum is σ = 1090676810. Its totient is φ = 1090676808.

The previous prime is 1090676801. The next prime is 1090676831. The reversal of 1090676809 is 9086760901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090320400 + 356409 = 33020^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090676809 - 2³ = 1090676801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1090676801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545338404 + 545338405.

It is an arithmetic number, because the mean of its divisors is an integer number (545338405).

Almost surely, 2^1090676809 is an apocalyptic number.

It is an amenable number.

1090676809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090676809 is an equidigital number, since it uses as much as digits as its factorization.

1090676809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1090676809 is about 33025.3964245700. The cubic root of 1090676809 is about 1029.3554294976.

The spelling of 1090676809 in words is "one billion, ninety million, six hundred seventy-six thousand, eight hundred nine".