2578913647 has 2 divisors, whose sum is σ = 2578913648. Its totient is φ = 2578913646.

The previous prime is 2578913611. The next prime is 2578913657. The reversal of 2578913647 is 7463198752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2578913647 - 2¹⁵ = 2578880879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578913594 and 2578913603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578913657) 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 as a sum of consecutive naturals, namely, 1289456823 + 1289456824.

It is an arithmetic number, because the mean of its divisors is an integer number (1289456824).

Almost surely, 2^2578913647 is an apocalyptic number.

2578913647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578913647 is an equidigital number, since it uses as much as digits as its factorization.

2578913647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The square root of 2578913647 is about 50783.0054939642. The cubic root of 2578913647 is about 1371.3414404595.

The spelling of 2578913647 in words is "two billion, five hundred seventy-eight million, nine hundred thirteen thousand, six hundred forty-seven".