2509440811 has 2 divisors, whose sum is σ = 2509440812. Its totient is φ = 2509440810.

The previous prime is 2509440749. The next prime is 2509440821. The reversal of 2509440811 is 1180449052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2509440811 - 2⁹ = 2509440299 is a prime.

It is not a weakly prime, because it can be changed into another prime (2509440821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254720405 + 1254720406.

It is an arithmetic number, because the mean of its divisors is an integer number (1254720406).

Almost surely, 2^2509440811 is an apocalyptic number.

2509440811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509440811 is an equidigital number, since it uses as much as digits as its factorization.

2509440811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 2509440811 is about 50094.3191489814. The cubic root of 2509440811 is about 1358.9150825277.

Adding to 2509440811 its reverse (1180449052), we get a palindrome (3689889863).

The spelling of 2509440811 in words is "two billion, five hundred nine million, four hundred forty thousand, eight hundred eleven".