2540416009 has 4 divisors (see below), whose sum is σ = 2551319316. Its totient is φ = 2529512704.

The previous prime is 2540416001. The next prime is 2540416013. The reversal of 2540416009 is 9006140452.

2540416009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 214476025 + 2325939984 = 14645^2 + 48228^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540416009 - 2³ = 2540416001 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540416001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5451304 + ... + 5451769.

It is an arithmetic number, because the mean of its divisors is an integer number (637829829).

Almost surely, 2^2540416009 is an apocalyptic number.

It is an amenable number.

2540416009 is a deficient number, since it is larger than the sum of its proper divisors (10903307).

2540416009 is a wasteful number, since it uses less digits than its factorization.

2540416009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10903306.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2540416009 is about 50402.5397078362. The cubic root of 2540416009 is about 1364.4834747277.

The spelling of 2540416009 in words is "two billion, five hundred forty million, four hundred sixteen thousand, nine".