2541305909 has 2 divisors, whose sum is σ = 2541305910. Its totient is φ = 2541305908.

The previous prime is 2541305867. The next prime is 2541305947. The reversal of 2541305909 is 9095031452.

It is an a-pointer prime, because the next prime (2541305947) can be obtained adding 2541305909 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1875149809 + 666156100 = 43303^2 + 25810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541305909 - 2⁸ = 2541305653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2541305959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270652954 + 1270652955.

It is an arithmetic number, because the mean of its divisors is an integer number (1270652955).

Almost surely, 2^2541305909 is an apocalyptic number.

It is an amenable number.

2541305909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541305909 is an equidigital number, since it uses as much as digits as its factorization.

2541305909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 2541305909 is about 50411.3668630399. The cubic root of 2541305909 is about 1364.6427809311.

The spelling of 2541305909 in words is "two billion, five hundred forty-one million, three hundred five thousand, nine hundred nine".