2540274887 has 2 divisors, whose sum is σ = 2540274888. Its totient is φ = 2540274886.

The previous prime is 2540274871. The next prime is 2540274959. The reversal of 2540274887 is 7884720452.

It is a happy number.

2540274887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2540274887 - 2⁴ = 2540274871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540274857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270137443 + 1270137444.

It is an arithmetic number, because the mean of its divisors is an integer number (1270137444).

Almost surely, 2^2540274887 is an apocalyptic number.

2540274887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540274887 is an equidigital number, since it uses as much as digits as its factorization.

2540274887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1003520, while the sum is 47.

The square root of 2540274887 is about 50401.1397390972. The cubic root of 2540274887 is about 1364.4582082357.

The spelling of 2540274887 in words is "two billion, five hundred forty million, two hundred seventy-four thousand, eight hundred eighty-seven".