2540166843 has 16 divisors (see below), whose sum is σ = 3587310720. Its totient is φ = 1593300096.

The previous prime is 2540166833. The next prime is 2540166859. The reversal of 2540166843 is 3486610452.

It is not a de Polignac number, because 2540166843 - 2¹⁰ = 2540165819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540166833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194988 + ... + 207606.

It is an arithmetic number, because the mean of its divisors is an integer number (224206920).

Almost surely, 2^2540166843 is an apocalyptic number.

2540166843 is a deficient number, since it is larger than the sum of its proper divisors (1047143877).

2540166843 is a wasteful number, since it uses less digits than its factorization.

2540166843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16586.

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

The square root of 2540166843 is about 50400.0678868590. The cubic root of 2540166843 is about 1364.4388633984.

The spelling of 2540166843 in words is "two billion, five hundred forty million, one hundred sixty-six thousand, eight hundred forty-three".