2578738145 has 16 divisors (see below), whose sum is σ = 3241728000. Its totient is φ = 1966630848.

The previous prime is 2578738133. The next prime is 2578738163. The reversal of 2578738145 is 5418378752.

It is a cyclic number.

It is not a de Polignac number, because 2578738145 - 2¹² = 2578734049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578738093 and 2578738102.

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 15 ways as a sum of consecutive naturals, for example, 101105 + ... + 124014.

It is an arithmetic number, because the mean of its divisors is an integer number (202608000).

Almost surely, 2^2578738145 is an apocalyptic number.

It is an amenable number.

2578738145 is a deficient number, since it is larger than the sum of its proper divisors (662989855).

2578738145 is a wasteful number, since it uses less digits than its factorization.

2578738145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225232.

The product of its digits is 1881600, while the sum is 50.

The square root of 2578738145 is about 50781.2775046079. The cubic root of 2578738145 is about 1371.3103319311.

The spelling of 2578738145 in words is "two billion, five hundred seventy-eight million, seven hundred thirty-eight thousand, one hundred forty-five".