2115818272 has 24 divisors (see below), whose sum is σ = 4166675100. Its totient is φ = 1057615104.

The previous prime is 2115818269. The next prime is 2115818281. The reversal of 2115818272 is 2728185112.

It can be written as a sum of positive squares in 2 ways, for example, as 1767025296 + 348792976 = 42036^2 + 18676^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150354 + ... + 163822.

Almost surely, 2^2115818272 is an apocalyptic number.

It is an amenable number.

2115818272 is a deficient number, since it is larger than the sum of its proper divisors (2050856828).

2115818272 is a wasteful number, since it uses less digits than its factorization.

2115818272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18388 (or 18380 counting only the distinct ones).

The product of its digits is 17920, while the sum is 37.

The square root of 2115818272 is about 45998.0246532392. The cubic root of 2115818272 is about 1283.7864507708.

The spelling of 2115818272 in words is "two billion, one hundred fifteen million, eight hundred eighteen thousand, two hundred seventy-two".