2803128109 has 2 divisors, whose sum is σ = 2803128110. Its totient is φ = 2803128108.

The previous prime is 2803128101. The next prime is 2803128131. The reversal of 2803128109 is 9018213082.

2803128109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2599980100 + 203148009 = 50990^2 + 14253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2803128109 - 2³ = 2803128101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2803128101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401564054 + 1401564055.

It is an arithmetic number, because the mean of its divisors is an integer number (1401564055).

Almost surely, 2^2803128109 is an apocalyptic number.

It is an amenable number.

2803128109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2803128109 is an equidigital number, since it uses as much as digits as its factorization.

2803128109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2803128109 is about 52944.5758222691. The cubic root of 2803128109 is about 1409.9844253263.

The spelling of 2803128109 in words is "two billion, eight hundred three million, one hundred twenty-eight thousand, one hundred nine".