2546640813 has 32 divisors (see below), whose sum is σ = 3623961600. Its totient is φ = 1586151936.

The previous prime is 2546640797. The next prime is 2546640827. The reversal of 2546640813 is 3180466452.

It is not a de Polignac number, because 2546640813 - 2⁴ = 2546640797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2546644813) 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 in 31 ways as a sum of consecutive naturals, for example, 1984270 + ... + 1985552.

It is an arithmetic number, because the mean of its divisors is an integer number (113248800).

Almost surely, 2^2546640813 is an apocalyptic number.

It is an amenable number.

2546640813 is a deficient number, since it is larger than the sum of its proper divisors (1077320787).

2546640813 is a wasteful number, since it uses less digits than its factorization.

2546640813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 2546640813 is about 50464.2528231619. The cubic root of 2546640813 is about 1365.5970343757.

The spelling of 2546640813 in words is "two billion, five hundred forty-six million, six hundred forty thousand, eight hundred thirteen".