2578103109 has 12 divisors (see below), whose sum is σ = 3724925152. Its totient is φ = 1718274600.

The previous prime is 2578103093. The next prime is 2578103111. The reversal of 2578103109 is 9013018752.

It is not a de Polignac number, because 2578103109 - 2⁴ = 2578103093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578103909) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1057 + ... + 71814.

Almost surely, 2^2578103109 is an apocalyptic number.

It is an amenable number.

2578103109 is a deficient number, since it is larger than the sum of its proper divisors (1146822043).

2578103109 is a wasteful number, since it uses less digits than its factorization.

2578103109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76808 (or 76805 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 2578103109 is about 50775.0244608508. The cubic root of 2578103109 is about 1371.1977571145.

The spelling of 2578103109 in words is "two billion, five hundred seventy-eight million, one hundred three thousand, one hundred nine".