2541643828 has 12 divisors (see below), whose sum is σ = 4551316000. Its totient is φ = 1241267832.

The previous prime is 2541643787. The next prime is 2541643829. The reversal of 2541643828 is 8283461452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541643829) 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 3 ways as a sum of consecutive naturals, for example, 7388328 + ... + 7388671.

Almost surely, 2^2541643828 is an apocalyptic number.

It is an amenable number.

2541643828 is a deficient number, since it is larger than the sum of its proper divisors (2009672172).

2541643828 is a wasteful number, since it uses less digits than its factorization.

2541643828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14777046 (or 14777044 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The square root of 2541643828 is about 50414.7183667627. The cubic root of 2541643828 is about 1364.7032640453.

The spelling of 2541643828 in words is "two billion, five hundred forty-one million, six hundred forty-three thousand, eight hundred twenty-eight".