2578819 has 2 divisors, whose sum is σ = 2578820. Its totient is φ = 2578818.

The previous prime is 2578817. The next prime is 2578837. The reversal of 2578819 is 9188752.

2578819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2578819 - 2¹ = 2578817 is a prime.

It is a super-2 number, since 2×2578819² = 13300614869522, which contains 22 as substring.

Together with 2578817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2578817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289409 + 1289410.

It is an arithmetic number, because the mean of its divisors is an integer number (1289410).

2^2578819 is an apocalyptic number.

2578819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578819 is an equidigital number, since it uses as much as digits as its factorization.

2578819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 2578819 is about 1605.8701690984. The cubic root of 2578819 is about 137.1324664023.

The spelling of 2578819 in words is "two million, five hundred seventy-eight thousand, eight hundred nineteen".