1827218216 has 8 divisors (see below), whose sum is σ = 3426034170. Its totient is φ = 913609104.

The previous prime is 1827218207. The next prime is 1827218227. The reversal of 1827218216 is 6128127281.

It can be written as a sum of positive squares in only one way, i.e., 1532409316 + 294808900 = 39146^2 + 17170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1827218216³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1827218216.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114201131 + ... + 114201146.

Almost surely, 2^1827218216 is an apocalyptic number.

It is an amenable number.

1827218216 is a deficient number, since it is larger than the sum of its proper divisors (1598815954).

1827218216 is a wasteful number, since it uses less digits than its factorization.

1827218216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228402283 (or 228402279 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The square root of 1827218216 is about 42745.9730968895. The cubic root of 1827218216 is about 1222.5411103838.

The spelling of 1827218216 in words is "one billion, eight hundred twenty-seven million, two hundred eighteen thousand, two hundred sixteen".