2987181218 has 18 divisors (see below), whose sum is σ = 5213270673. Its totient is φ = 1279988640.

The previous prime is 2987181203. The next prime is 2987181229. The reversal of 2987181218 is 8121817892.

It can be written as a sum of positive squares in 2 ways, for example, as 2836947169 + 150234049 = 53263^2 + 12257^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=38647.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 538298 + ... + 543818.

Almost surely, 2^2987181218 is an apocalyptic number.

2987181218 is a deficient number, since it is larger than the sum of its proper divisors (2226089455).

2987181218 is an frugal number, since it uses more digits than its factorization.

2987181218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058 (or 5530 counting only the distinct ones).

The product of its digits is 129024, while the sum is 47.

The square root of 2987181218 is about 54655.1115450330. Note that the first 3 decimals coincide. The cubic root of 2987181218 is about 1440.1924283097.

The spelling of 2987181218 in words is "two billion, nine hundred eighty-seven million, one hundred eighty-one thousand, two hundred eighteen".