2109013771 has 2 divisors, whose sum is σ = 2109013772. Its totient is φ = 2109013770.

The previous prime is 2109013759. The next prime is 2109013799. The reversal of 2109013771 is 1773109012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2109013771 - 2¹³ = 2109005579 is a prime.

It is not a weakly prime, because it can be changed into another prime (2109013871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054506885 + 1054506886.

It is an arithmetic number, because the mean of its divisors is an integer number (1054506886).

Almost surely, 2^2109013771 is an apocalyptic number.

2109013771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109013771 is an equidigital number, since it uses as much as digits as its factorization.

2109013771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 2109013771 is about 45923.9999455622. Note that the first 4 decimals coincide. The cubic root of 2109013771 is about 1282.4087477806.

The spelling of 2109013771 in words is "two billion, one hundred nine million, thirteen thousand, seven hundred seventy-one".