1982554218 has 40 divisors (see below), whose sum is σ = 4461872580. Its totient is φ = 657953280.

The previous prime is 1982554181. The next prime is 1982554241. The reversal of 1982554218 is 8124552891.

1982554218 is a `hidden beast` number, since 1 + 9 + 82 + 554 + 2 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1761229089 + 221325129 = 41967^2 + 14877^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10378 + ... + 63818.

Almost surely, 2^1982554218 is an apocalyptic number.

1982554218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1982554218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2230936290).

1982554218 is an abundant number, since it is smaller than the sum of its proper divisors (2479318362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1982554218 is a wasteful number, since it uses less digits than its factorization.

1982554218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53684 (or 53675 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 1982554218 is about 44525.8825628420. The cubic root of 1982554218 is about 1256.2469615431.

The spelling of 1982554218 in words is "one billion, nine hundred eighty-two million, five hundred fifty-four thousand, two hundred eighteen".