2545566618 has 16 divisors (see below), whose sum is σ = 5818438080. Its totient is φ = 727304736.

The previous prime is 2545566601. The next prime is 2545566649. The reversal of 2545566618 is 8166655452.

It is an unprimeable number.

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, 30304323 + ... + 30304406.

It is an arithmetic number, because the mean of its divisors is an integer number (363652380).

Almost surely, 2^2545566618 is an apocalyptic number.

2545566618 is an abundant number, since it is smaller than the sum of its proper divisors (3272871462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545566618 is a wasteful number, since it uses less digits than its factorization.

2545566618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60608741.

The product of its digits is 1728000, while the sum is 48.

The square root of 2545566618 is about 50453.6085726284. The cubic root of 2545566618 is about 1365.4050005142.

The spelling of 2545566618 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, six hundred eighteen".