2546385641 has 2 divisors, whose sum is σ = 2546385642. Its totient is φ = 2546385640.

The previous prime is 2546385581. The next prime is 2546385659. The reversal of 2546385641 is 1465836452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2247234025 + 299151616 = 47405^2 + 17296^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546385641 - 2⁶ = 2546385577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2546385592 and 2546385601.

It is not a weakly prime, because it can be changed into another prime (2546388641) 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 as a sum of consecutive naturals, namely, 1273192820 + 1273192821.

It is an arithmetic number, because the mean of its divisors is an integer number (1273192821).

Almost surely, 2^2546385641 is an apocalyptic number.

It is an amenable number.

2546385641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546385641 is an equidigital number, since it uses as much as digits as its factorization.

2546385641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 44.

The square root of 2546385641 is about 50461.7245147250. The cubic root of 2546385641 is about 1365.5514221633.

The spelling of 2546385641 in words is "two billion, five hundred forty-six million, three hundred eighty-five thousand, six hundred forty-one".