2540809513 has 8 divisors (see below), whose sum is σ = 2785723200. Its totient is φ = 2298217680.

The previous prime is 2540809493. The next prime is 2540809541. The reversal of 2540809513 is 3159080452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540809513 - 2¹³ = 2540801321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540809543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578170 + ... + 582547.

It is an arithmetic number, because the mean of its divisors is an integer number (348215400).

Almost surely, 2^2540809513 is an apocalyptic number.

It is an amenable number.

2540809513 is a deficient number, since it is larger than the sum of its proper divisors (244913687).

2540809513 is a wasteful number, since it uses less digits than its factorization.

2540809513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160927.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 2540809513 is about 50406.4431694997. The cubic root of 2540809513 is about 1364.5539227675.

Adding to 2540809513 its reverse (3159080452), we get a palindrome (5699889965).

The spelling of 2540809513 in words is "two billion, five hundred forty million, eight hundred nine thousand, five hundred thirteen".