18357914686718 has 8 divisors (see below), whose sum is σ = 28056435653448. Its totient is φ = 9005769468904.

The previous prime is 18357914686681. The next prime is 18357914686729. The reversal of 18357914686718 is 81768641975381.

It is a happy number.

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

It is a super-2 number, since 2×18357914686718² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

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, 86593937096 + ... + 86593937307.

It is an arithmetic number, because the mean of its divisors is an integer number (3507054456681).

Almost surely, 2^{18357914686718} is an apocalyptic number.

18357914686718 is a deficient number, since it is larger than the sum of its proper divisors (9698520966730).

18357914686718 is a wasteful number, since it uses less digits than its factorization.

18357914686718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173187874458.

The product of its digits is 487710720, while the sum is 74.

The spelling of 18357914686718 in words is "eighteen trillion, three hundred fifty-seven billion, nine hundred fourteen million, six hundred eighty-six thousand, seven hundred eighteen".