18164210197688 has 16 divisors (see below), whose sum is σ = 34125603659280. Its totient is φ = 9064049221888.

The previous prime is 18164210197663. The next prime is 18164210197781. The reversal of 18164210197688 is 88679101246181.

It is a self number, because there is not a number n which added to its sum of digits gives 18164210197688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256980345 + ... + 2256988392.

It is an arithmetic number, because the mean of its divisors is an integer number (2132850228705).

Almost surely, 2^{18164210197688} is an apocalyptic number.

It is an amenable number.

18164210197688 is a deficient number, since it is larger than the sum of its proper divisors (15961393461592).

18164210197688 is a wasteful number, since it uses less digits than its factorization.

18164210197688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513969246 (or 4513969242 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 62.

The spelling of 18164210197688 in words is "eighteen trillion, one hundred sixty-four billion, two hundred ten million, one hundred ninety-seven thousand, six hundred eighty-eight".