993888682 has 8 divisors (see below), whose sum is σ = 1505594052. Its totient is φ = 492024000.

The previous prime is 993888671. The next prime is 993888683. The reversal of 993888682 is 286888399.

It can be written as a sum of positive squares in 2 ways, for example, as 916817841 + 77070841 = 30279^2 + 8779^2 .

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

It is a super-3 number, since 3×993888682³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993888682.

It is not an unprimeable number, because it can be changed into a prime (993888683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2459919 + ... + 2460322.

Almost surely, 2^993888682 is an apocalyptic number.

993888682 is a deficient number, since it is larger than the sum of its proper divisors (511705370).

993888682 is a wasteful number, since it uses less digits than its factorization.

993888682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920344.

The product of its digits is 11943936, while the sum is 61.

The square root of 993888682 is about 31526.0000951596. Note that the first 4 decimals coincide. The cubic root of 993888682 is about 997.9587300522.

The spelling of 993888682 in words is "nine hundred ninety-three million, eight hundred eighty-eight thousand, six hundred eighty-two".