2540823853 has 2 divisors, whose sum is σ = 2540823854. Its totient is φ = 2540823852.

The previous prime is 2540823743. The next prime is 2540823919. The reversal of 2540823853 is 3583280452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1500245289 + 1040578564 = 38733^2 + 32258^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540823853 - 2¹³ = 2540815661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540823053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270411926 + 1270411927.

It is an arithmetic number, because the mean of its divisors is an integer number (1270411927).

Almost surely, 2^2540823853 is an apocalyptic number.

It is an amenable number.

2540823853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540823853 is an equidigital number, since it uses as much as digits as its factorization.

2540823853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 2540823853 is about 50406.5854130192. The cubic root of 2540823853 is about 1364.5564898846.

The spelling of 2540823853 in words is "two billion, five hundred forty million, eight hundred twenty-three thousand, eight hundred fifty-three".