16889684918 has 8 divisors (see below), whose sum is σ = 25502306160. Its totient is φ = 8388916200.

The previous prime is 16889684899. The next prime is 16889684923. The reversal of 16889684918 is 81948698861.

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

It is a super-2 number, since 2×16889684918² (a number of 21 digits) contains 22 as substring.

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, 27962753 + ... + 27963356.

It is an arithmetic number, because the mean of its divisors is an integer number (3187788270).

Almost surely, 2^16889684918 is an apocalyptic number.

16889684918 is a deficient number, since it is larger than the sum of its proper divisors (8612621242).

16889684918 is a wasteful number, since it uses less digits than its factorization.

16889684918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55926262.

The product of its digits is 47775744, while the sum is 68.

The spelling of 16889684918 in words is "sixteen billion, eight hundred eighty-nine million, six hundred eighty-four thousand, nine hundred eighteen".