2558383978 has 32 divisors (see below), whose sum is σ = 4038336000. Its totient is φ = 1213267440.

The previous prime is 2558383931. The next prime is 2558383987. The reversal of 2558383978 is 8793838552.

It is an unprimeable number.

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, 5126773 + ... + 5127271.

It is an arithmetic number, because the mean of its divisors is an integer number (126198000).

Almost surely, 2^2558383978 is an apocalyptic number.

2558383978 is a deficient number, since it is larger than the sum of its proper divisors (1479952022).

2558383978 is a wasteful number, since it uses less digits than its factorization.

2558383978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its digits is 14515200, while the sum is 58.

The square root of 2558383978 is about 50580.4703220522. The cubic root of 2558383978 is about 1367.6928468812.

It can be divided in two parts, 25583 and 83978, that added together give a square (109561 = 331²).

The spelling of 2558383978 in words is "two billion, five hundred fifty-eight million, three hundred eighty-three thousand, nine hundred seventy-eight".