2009191103 has 2 divisors, whose sum is σ = 2009191104. Its totient is φ = 2009191102.

The previous prime is 2009191097. The next prime is 2009191117. The reversal of 2009191103 is 3011919002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2009191103 - 2²⁴ = 1992413887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009191123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004595551 + 1004595552.

It is an arithmetic number, because the mean of its divisors is an integer number (1004595552).

Almost surely, 2^2009191103 is an apocalyptic number.

2009191103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009191103 is an equidigital number, since it uses as much as digits as its factorization.

2009191103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 2009191103 is about 44824.0014166518. The cubic root of 2009191103 is about 1261.8481116224.

The spelling of 2009191103 in words is "two billion, nine million, one hundred ninety-one thousand, one hundred three".