2118566372 has 12 divisors (see below), whose sum is σ = 3992682876. Its totient is φ = 977799840.

The previous prime is 2118566371. The next prime is 2118566399. The reversal of 2118566372 is 2736658112.

It can be written as a sum of positive squares in 2 ways, for example, as 348344896 + 1770221476 = 18664^2 + 42074^2 .

It is not an unprimeable number, because it can be changed into a prime (2118566371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20370779 + ... + 20370882.

It is an arithmetic number, because the mean of its divisors is an integer number (332723573).

Almost surely, 2^2118566372 is an apocalyptic number.

It is an amenable number.

2118566372 is a deficient number, since it is larger than the sum of its proper divisors (1874116504).

2118566372 is a wasteful number, since it uses less digits than its factorization.

2118566372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40741678 (or 40741676 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 2118566372 is about 46027.8868947946. The cubic root of 2118566372 is about 1284.3420194719.

The spelling of 2118566372 in words is "two billion, one hundred eighteen million, five hundred sixty-six thousand, three hundred seventy-two".