2827971218 has 18 divisors (see below), whose sum is σ = 4386824757. Its totient is φ = 1367245080.

The previous prime is 2827971197. The next prime is 2827971241. The reversal of 2827971218 is 8121797282.

It can be written as a sum of positive squares in 2 ways, for example, as 1973402929 + 854568289 = 44423^2 + 29233^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=37603.

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, 2330780 + ... + 2331992.

Almost surely, 2^2827971218 is an apocalyptic number.

2827971218 is a deficient number, since it is larger than the sum of its proper divisors (1558853539).

2827971218 is an frugal number, since it uses more digits than its factorization.

2827971218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 1246 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 2827971218 is about 53178.6725859155. The cubic root of 2827971218 is about 1414.1375738325.

Multiplying 2827971218 by its product of digits (225792), we get a square (638533277254656 = 25269216²).

The spelling of 2827971218 in words is "two billion, eight hundred twenty-seven million, nine hundred seventy-one thousand, two hundred eighteen".