2180247218 has 4 divisors (see below), whose sum is σ = 3270370830. Its totient is φ = 1090123608.

The previous prime is 2180247203. The next prime is 2180247221. The reversal of 2180247218 is 8127420812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2153238409 + 27008809 = 46403^2 + 5197^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545061803 + ... + 545061806.

Almost surely, 2^2180247218 is an apocalyptic number.

2180247218 is a deficient number, since it is larger than the sum of its proper divisors (1090123612).

2180247218 is a wasteful number, since it uses less digits than its factorization.

2180247218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090123611.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 2180247218 is about 46693.1174585720. The cubic root of 2180247218 is about 1296.6872692372.

The spelling of 2180247218 in words is "two billion, one hundred eighty million, two hundred forty-seven thousand, two hundred eighteen".