18058068 has 108 divisors (see below), whose sum is σ = 55085940. Its totient is φ = 4967424.

The previous prime is 18058021. The next prime is 18058091. The reversal of 18058068 is 86085081.

18058068 is a `hidden beast` number, since 18 + 0 + 580 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8398404 + 9659664 = 2898^2 + 3108^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50980 + ... + 51332.

It is an arithmetic number, because the mean of its divisors is an integer number (510055).

Almost surely, 2^18058068 is an apocalyptic number.

18058068 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 18058068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27542970).

18058068 is an abundant number, since it is smaller than the sum of its proper divisors (37027872).

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

18058068 is a wasteful number, since it uses less digits than its factorization.

18058068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 18058068 is about 4249.4785562466. The cubic root of 18058068 is about 262.3556539735.

The spelling of 18058068 in words is "eighteen million, fifty-eight thousand, sixty-eight".