1818387168 has 96 divisors (see below), whose sum is σ = 5153702400. Its totient is φ = 558061056.

The previous prime is 1818387127. The next prime is 1818387271. The reversal of 1818387168 is 8617838181.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1818387168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546213 + ... + 549531.

It is an arithmetic number, because the mean of its divisors is an integer number (53684400).

Almost surely, 2^1818387168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818387168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2576851200).

1818387168 is an abundant number, since it is smaller than the sum of its proper divisors (3335315232).

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

1818387168 is a wasteful number, since it uses less digits than its factorization.

1818387168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784 (or 3776 counting only the distinct ones).

The product of its digits is 516096, while the sum is 51.

The square root of 1818387168 is about 42642.5511431950. The cubic root of 1818387168 is about 1220.5683923186.

The spelling of 1818387168 in words is "one billion, eight hundred eighteen million, three hundred eighty-seven thousand, one hundred sixty-eight".