1838178018216 has 48 divisors (see below), whose sum is σ = 5150067729300. Its totient is φ = 591597522432.

The previous prime is 1838178018199. The next prime is 1838178018221. The reversal of 1838178018216 is 6128108718381.

1838178018216 is a `hidden beast` number, since 1 + 8 + 381 + 7 + 80 + 182 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1837841148900 + 336869316 = 1355670^2 + 18354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440174641 + ... + 440178816.

Almost surely, 2^{1838178018216} is an apocalyptic number.

It is an amenable number.

1838178018216 is an abundant number, since it is smaller than the sum of its proper divisors (3311889711084).

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

1838178018216 is a wasteful number, since it uses less digits than its factorization.

1838178018216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880353498 (or 880353491 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 1838178018216 in words is "one trillion, eight hundred thirty-eight billion, one hundred seventy-eight million, eighteen thousand, two hundred sixteen".