2578870739 has 2 divisors, whose sum is σ = 2578870740. Its totient is φ = 2578870738.

The previous prime is 2578870711. The next prime is 2578870747. The reversal of 2578870739 is 9370788752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2578870739 is a prime.

It is a super-2 number, since 2×2578870739² = 13301148576940812242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2578870769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289435369 + 1289435370.

It is an arithmetic number, because the mean of its divisors is an integer number (1289435370).

Almost surely, 2^2578870739 is an apocalyptic number.

2578870739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578870739 is an equidigital number, since it uses as much as digits as its factorization.

2578870739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The square root of 2578870739 is about 50782.5830280422. The cubic root of 2578870739 is about 1371.3338349515. Note that the first 3 decimals are identical.

The spelling of 2578870739 in words is "two billion, five hundred seventy-eight million, eight hundred seventy thousand, seven hundred thirty-nine".