2109813259 has 2 divisors, whose sum is σ = 2109813260. Its totient is φ = 2109813258.

The previous prime is 2109813217. The next prime is 2109813269. The reversal of 2109813259 is 9523189012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2109813259 - 2¹³ = 2109805067 is a prime.

It is not a weakly prime, because it can be changed into another prime (2109813269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054906629 + 1054906630.

It is an arithmetic number, because the mean of its divisors is an integer number (1054906630).

Almost surely, 2^2109813259 is an apocalyptic number.

2109813259 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109813259 is an equidigital number, since it uses as much as digits as its factorization.

2109813259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 2109813259 is about 45932.7035890552. The cubic root of 2109813259 is about 1282.5707730983.

The spelling of 2109813259 in words is "two billion, one hundred nine million, eight hundred thirteen thousand, two hundred fifty-nine".