2546645863 has 2 divisors, whose sum is σ = 2546645864. Its totient is φ = 2546645862.

The previous prime is 2546645861. The next prime is 2546645887. The reversal of 2546645863 is 3685466452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2546645863 - 2¹ = 2546645861 is a prime.

Together with 2546645861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2546645861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273322931 + 1273322932.

It is an arithmetic number, because the mean of its divisors is an integer number (1273322932).

Almost surely, 2^2546645863 is an apocalyptic number.

2546645863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546645863 is an equidigital number, since it uses as much as digits as its factorization.

2546645863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 49.

The square root of 2546645863 is about 50464.3028585554. The cubic root of 2546645863 is about 1365.5979370368.

The spelling of 2546645863 in words is "two billion, five hundred forty-six million, six hundred forty-five thousand, eight hundred sixty-three".