2543619140 has 24 divisors (see below), whose sum is σ = 5382381312. Its totient is φ = 1009679840.

The previous prime is 2543619121. The next prime is 2543619149. The reversal of 2543619140 is 419163452.

It is a self number, because there is not a number n which added to its sum of digits gives 2543619140.

It is not an unprimeable number, because it can be changed into a prime (2543619149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482804 + ... + 488043.

It is an arithmetic number, because the mean of its divisors is an integer number (224265888).

Almost surely, 2^2543619140 is an apocalyptic number.

2543619140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543619140 is an abundant number, since it is smaller than the sum of its proper divisors (2838762172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2543619140 is a wasteful number, since it uses less digits than its factorization.

2543619140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970987 (or 970985 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2543619140 is about 50434.3051900192. The cubic root of 2543619140 is about 1365.0567120323.

The spelling of 2543619140 in words is "two billion, five hundred forty-three million, six hundred nineteen thousand, one hundred forty".