2180939123 has 8 divisors (see below), whose sum is σ = 2397941760. Its totient is φ = 1967059080.

The previous prime is 2180939093. The next prime is 2180939141. The reversal of 2180939123 is 3219390812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2180939123 - 2¹⁰ = 2180938099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180939183) 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, 779183 + ... + 781976.

It is an arithmetic number, because the mean of its divisors is an integer number (299742720).

Almost surely, 2^2180939123 is an apocalyptic number.

2180939123 is a deficient number, since it is larger than the sum of its proper divisors (217002637).

2180939123 is a wasteful number, since it uses less digits than its factorization.

2180939123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561297.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 2180939123 is about 46700.5259392226. The cubic root of 2180939123 is about 1296.8244233340.

The spelling of 2180939123 in words is "two billion, one hundred eighty million, nine hundred thirty-nine thousand, one hundred twenty-three".