1018805216986 has 8 divisors (see below), whose sum is σ = 1528217927604. Its totient is φ = 509399241120.

The previous prime is 1018805216959. The next prime is 1018805216987. The reversal of 1018805216986 is 6896125088101.

It can be written as a sum of positive squares in 2 ways, for example, as 789334518025 + 229470698961 = 888445^2 + 479031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1018805216987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286785 + ... + 1921828.

Almost surely, 2^{1018805216986} is an apocalyptic number.

1018805216986 is a deficient number, since it is larger than the sum of its proper divisors (509412710618).

1018805216986 is a wasteful number, since it uses less digits than its factorization.

1018805216986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367376.

The product of its (nonzero) digits is 1658880, while the sum is 55.

The spelling of 1018805216986 in words is "one trillion, eighteen billion, eight hundred five million, two hundred sixteen thousand, nine hundred eighty-six".