2578842481 has 2 divisors, whose sum is σ = 2578842482. Its totient is φ = 2578842480.

The previous prime is 2578842451. The next prime is 2578842493. The reversal of 2578842481 is 1842488752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1423930225 + 1154912256 = 37735^2 + 33984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2578842481 - 2¹³ = 2578834289 is a prime.

It is a super-2 number, since 2×2578842481² = 13300857083620470722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2578842401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289421240 + 1289421241.

It is an arithmetic number, because the mean of its divisors is an integer number (1289421241).

Almost surely, 2^2578842481 is an apocalyptic number.

It is an amenable number.

2578842481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578842481 is an equidigital number, since it uses as much as digits as its factorization.

2578842481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1146880, while the sum is 49.

The square root of 2578842481 is about 50782.3048019682. The cubic root of 2578842481 is about 1371.3288261322.

The spelling of 2578842481 in words is "two billion, five hundred seventy-eight million, eight hundred forty-two thousand, four hundred eighty-one".