2581608118 has 4 divisors (see below), whose sum is σ = 3872412180. Its totient is φ = 1290804058.

The previous prime is 2581608047. The next prime is 2581608167. The reversal of 2581608118 is 8118061852.

2581608118 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 is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645402028 + ... + 645402031.

It is an arithmetic number, because the mean of its divisors is an integer number (968103045).

Almost surely, 2^2581608118 is an apocalyptic number.

2581608118 is a deficient number, since it is larger than the sum of its proper divisors (1290804062).

2581608118 is a wasteful number, since it uses less digits than its factorization.

2581608118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290804061.

The product of its (nonzero) digits is 30720, while the sum is 40.

The square root of 2581608118 is about 50809.5278269736. The cubic root of 2581608118 is about 1371.8188706394.

The spelling of 2581608118 in words is "two billion, five hundred eighty-one million, six hundred eight thousand, one hundred eighteen".