2540918273 has 2 divisors, whose sum is σ = 2540918274. Its totient is φ = 2540918272.

The previous prime is 2540918239. The next prime is 2540918291. The reversal of 2540918273 is 3728190452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2485221904 + 55696369 = 49852^2 + 7463^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540918273 - 2¹² = 2540914177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2540918273.

It is not a weakly prime, because it can be changed into another prime (2540918173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270459136 + 1270459137.

It is an arithmetic number, because the mean of its divisors is an integer number (1270459137).

Almost surely, 2^2540918273 is an apocalyptic number.

It is an amenable number.

2540918273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540918273 is an equidigital number, since it uses as much as digits as its factorization.

2540918273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 2540918273 is about 50407.5219882906. The cubic root of 2540918273 is about 1364.5733925161.

The spelling of 2540918273 in words is "two billion, five hundred forty million, nine hundred eighteen thousand, two hundred seventy-three".