999718019882 has 16 divisors (see below), whose sum is σ = 1587807091080. Its totient is φ = 470449717248.

The previous prime is 999718019857. The next prime is 999718020011. The reversal of 999718019882 is 288910817999.

999718019882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 999859²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 989445994681 + 10272025201 = 994709^2 + 101351^2 .

It is a super-2 number, since 2×999718019882² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3997994 + ... + 4240682.

Almost surely, 2^999718019882 is an apocalyptic number.

999718019882 is a deficient number, since it is larger than the sum of its proper divisors (588089071198).

999718019882 is a wasteful number, since it uses less digits than its factorization.

999718019882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363865.

The product of its (nonzero) digits is 47029248, while the sum is 71.

The spelling of 999718019882 in words is "nine hundred ninety-nine billion, seven hundred eighteen million, nineteen thousand, eight hundred eighty-two".