18368568 has 96 divisors (see below), whose sum is σ = 54054000. Its totient is φ = 5612544.

The previous prime is 18368563. The next prime is 18368569. The reversal of 18368568 is 86586381.

18368568 is a `hidden beast` number, since 1 + 83 + 6 + 8 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52458 + ... + 52806.

Almost surely, 2^18368568 is an apocalyptic number.

18368568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18368568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27027000).

18368568 is an abundant number, since it is smaller than the sum of its proper divisors (35685432).

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

18368568 is a wasteful number, since it uses less digits than its factorization.

18368568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 414 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 18368568 is about 4285.8567404896. The cubic root of 18368568 is about 263.8508110245.

It can be divided in two parts, 1836 and 8568, that added together give a square (10404 = 102²).

The spelling of 18368568 in words is "eighteen million, three hundred sixty-eight thousand, five hundred sixty-eight".