2180254209 has 16 divisors (see below), whose sum is σ = 3362322432. Its totient is φ = 1230848208.

The previous prime is 2180254207. The next prime is 2180254213. The reversal of 2180254209 is 9024520812.

It is not a de Polignac number, because 2180254209 - 2¹ = 2180254207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2180254209.

It is not an unprimeable number, because it can be changed into a prime (2180254201) 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, 623689 + ... + 627174.

It is an arithmetic number, because the mean of its divisors is an integer number (210145152).

Almost surely, 2^2180254209 is an apocalyptic number.

It is an amenable number.

2180254209 is a deficient number, since it is larger than the sum of its proper divisors (1182068223).

2180254209 is a wasteful number, since it uses less digits than its factorization.

2180254209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250956.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2180254209 is about 46693.1923196519. The cubic root of 2180254209 is about 1296.6886551857.

The spelling of 2180254209 in words is "two billion, one hundred eighty million, two hundred fifty-four thousand, two hundred nine".