6541346209 has 2 divisors, whose sum is σ = 6541346210. Its totient is φ = 6541346208.

The previous prime is 6541346179. The next prime is 6541346221. The reversal of 6541346209 is 9026431456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6184249600 + 357096609 = 78640^2 + 18897^2 .

It is a cyclic number.

It is not a de Polignac number, because 6541346209 - 2¹³ = 6541338017 is a prime.

It is not a weakly prime, because it can be changed into another prime (6541346249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270673104 + 3270673105.

It is an arithmetic number, because the mean of its divisors is an integer number (3270673105).

Almost surely, 2^6541346209 is an apocalyptic number.

It is an amenable number.

6541346209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541346209 is an equidigital number, since it uses as much as digits as its factorization.

6541346209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 6541346209 is about 80878.5893113870. The cubic root of 6541346209 is about 1870.2042737757.

The spelling of 6541346209 in words is "six billion, five hundred forty-one million, three hundred forty-six thousand, two hundred nine".