1018688984819 has 4 divisors (see below), whose sum is σ = 1111297074360. Its totient is φ = 926080895280.

The previous prime is 1018688984791. The next prime is 1018688984839. The reversal of 1018688984819 is 9184898868101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1018688984819 - 2⁸ = 1018688984563 is a prime.

It is a super-2 number, since 2×1018688984819² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1018688984839) 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, 46304044754 + ... + 46304044775.

It is an arithmetic number, because the mean of its divisors is an integer number (277824268590).

Almost surely, 2^{1018688984819} is an apocalyptic number.

1018688984819 is a deficient number, since it is larger than the sum of its proper divisors (92608089541).

1018688984819 is an equidigital number, since it uses as much as digits as its factorization.

1018688984819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92608089540.

The product of its (nonzero) digits is 63700992, while the sum is 71.

The spelling of 1018688984819 in words is "one trillion, eighteen billion, six hundred eighty-eight million, nine hundred eighty-four thousand, eight hundred nineteen".