2180311930 has 16 divisors (see below), whose sum is σ = 4059891720. Its totient is φ = 842051392.

The previous prime is 2180311927. The next prime is 2180311937. The reversal of 2180311930 is 391130812.

It can be written as a sum of positive squares in 4 ways, for example, as 1726153209 + 454158721 = 41547^2 + 21311^2 .

It is a super-2 number, since 2×2180311930² = 9507520224200649800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2180311937) 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, 3758869 + ... + 3759448.

Almost surely, 2^2180311930 is an apocalyptic number.

2180311930 is a deficient number, since it is larger than the sum of its proper divisors (1879579790).

2180311930 is a wasteful number, since it uses less digits than its factorization.

2180311930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7518353.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 2180311930 is about 46693.8104035214. The cubic root of 2180311930 is about 1296.7000981182.

It can be divided in two parts, 218031 and 1930, that added together give a square (219961 = 469²).

The spelling of 2180311930 in words is "two billion, one hundred eighty million, three hundred eleven thousand, nine hundred thirty".