2002281109 has 2 divisors, whose sum is σ = 2002281110. Its totient is φ = 2002281108.

The previous prime is 2002281107. The next prime is 2002281137. The reversal of 2002281109 is 9011822002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1990052100 + 12229009 = 44610^2 + 3497^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002281109 - 2¹ = 2002281107 is a prime.

Together with 2002281107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002281101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001140554 + 1001140555.

It is an arithmetic number, because the mean of its divisors is an integer number (1001140555).

Almost surely, 2^2002281109 is an apocalyptic number.

It is an amenable number.

2002281109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002281109 is an equidigital number, since it uses as much as digits as its factorization.

2002281109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2002281109 is about 44746.8558560264. The cubic root of 2002281109 is about 1260.3998707749.

The spelling of 2002281109 in words is "two billion, two million, two hundred eighty-one thousand, one hundred nine".