2578108091 has 16 divisors (see below), whose sum is σ = 2889432000. Its totient is φ = 2283915648.

The previous prime is 2578108067. The next prime is 2578108121. The reversal of 2578108091 is 1908018752.

It is not a de Polignac number, because 2578108091 - 2¹⁰ = 2578107067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2578108391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42485 + ... + 83433.

It is an arithmetic number, because the mean of its divisors is an integer number (180589500).

Almost surely, 2^2578108091 is an apocalyptic number.

2578108091 is a deficient number, since it is larger than the sum of its proper divisors (311323909).

2578108091 is a wasteful number, since it uses less digits than its factorization.

2578108091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41158.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 2578108091 is about 50775.0735203801. The cubic root of 2578108091 is about 1371.1986403612.

The spelling of 2578108091 in words is "two billion, five hundred seventy-eight million, one hundred eight thousand, ninety-one".