18285999613854 has 64 divisors (see below), whose sum is σ = 41988631426560. Its totient is φ = 5200577256960.

The previous prime is 18285999613831. The next prime is 18285999613859. The reversal of 18285999613854 is 45831699958281.

It is a self number, because there is not a number n which added to its sum of digits gives 18285999613854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18285999613859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32316682 + ... + 32877650.

It is an arithmetic number, because the mean of its divisors is an integer number (656072366040).

Almost surely, 2^{18285999613854} is an apocalyptic number.

18285999613854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18285999613854 is an abundant number, since it is smaller than the sum of its proper divisors (23702631812706).

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

18285999613854 is a wasteful number, since it uses less digits than its factorization.

18285999613854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564545.

The product of its digits is 1343692800, while the sum is 78.

The spelling of 18285999613854 in words is "eighteen trillion, two hundred eighty-five billion, nine hundred ninety-nine million, six hundred thirteen thousand, eight hundred fifty-four".