2719542209 has 2 divisors, whose sum is σ = 2719542210. Its totient is φ = 2719542208.

The previous prime is 2719542197. The next prime is 2719542211. The reversal of 2719542209 is 9022459172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2320541584 + 399000625 = 48172^2 + 19975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2719542209 - 2²⁴ = 2702764993 is a prime.

Together with 2719542211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2719542289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359771104 + 1359771105.

It is an arithmetic number, because the mean of its divisors is an integer number (1359771105).

Almost surely, 2^2719542209 is an apocalyptic number.

It is an amenable number.

2719542209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2719542209 is an equidigital number, since it uses as much as digits as its factorization.

2719542209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 2719542209 is about 52149.2301860727. The cubic root of 2719542209 is about 1395.8280920723.

The spelling of 2719542209 in words is "two billion, seven hundred nineteen million, five hundred forty-two thousand, two hundred nine".