18558068 has 12 divisors (see below), whose sum is σ = 32552100. Its totient is φ = 9257472.

The previous prime is 18558061. The next prime is 18558077. The reversal of 18558068 is 86085581.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 6012304 = 3542^2 + 2452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18558061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371 + ... + 6962.

It is an arithmetic number, because the mean of its divisors is an integer number (2712675).

Almost surely, 2^18558068 is an apocalyptic number.

It is an amenable number.

18558068 is a deficient number, since it is larger than the sum of its proper divisors (13994032).

18558068 is a wasteful number, since it uses less digits than its factorization.

18558068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786 (or 10784 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 18558068 is about 4307.9076127512. The cubic root of 18558068 is about 264.7550507397.

The spelling of 18558068 in words is "eighteen million, five hundred fifty-eight thousand, sixty-eight".