2542542646 has 16 divisors (see below), whose sum is σ = 4588047360. Its totient is φ = 1032310440.

The previous prime is 2542542641. The next prime is 2542542679. The reversal of 2542542646 is 6462452452.

It is a junction number, because it is equal to n+sod(n) for n = 2542542599 and 2542542608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542542641) 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 in 7 ways as a sum of consecutive naturals, for example, 4778950 + ... + 4779481.

It is an arithmetic number, because the mean of its divisors is an integer number (286752960).

Almost surely, 2^2542542646 is an apocalyptic number.

2542542646 is a deficient number, since it is larger than the sum of its proper divisors (2045504714).

2542542646 is a wasteful number, since it uses less digits than its factorization.

2542542646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558459.

The product of its digits is 460800, while the sum is 40.

The square root of 2542542646 is about 50423.6318208040. The cubic root of 2542542646 is about 1364.8641147095.

The spelling of 2542542646 in words is "two billion, five hundred forty-two million, five hundred forty-two thousand, six hundred forty-six".