1684473339018 has 8 divisors (see below), whose sum is σ = 3368946678048. Its totient is φ = 561491113004.

The previous prime is 1684473339011. The next prime is 1684473339023. The reversal of 1684473339018 is 8109333744861.

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

1684473339018 is an admirable number.

It is a super-2 number, since 2×1684473339018² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1684473339011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140372778246 + ... + 140372778257.

It is an arithmetic number, because the mean of its divisors is an integer number (421118334756).

Almost surely, 2^{1684473339018} is an apocalyptic number.

1684473339018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1684473339018 is a wasteful number, since it uses less digits than its factorization.

1684473339018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280745556508.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 1684473339018 in words is "one trillion, six hundred eighty-four billion, four hundred seventy-three million, three hundred thirty-nine thousand, eighteen".