18126858 has 16 divisors (see below), whose sum is σ = 36416160. Its totient is φ = 6015216.

The previous prime is 18126853. The next prime is 18126869. The reversal of 18126858 is 85862181.

It is not an unprimeable number, because it can be changed into a prime (18126853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5293 + ... + 8016.

It is an arithmetic number, because the mean of its divisors is an integer number (2276010).

Almost surely, 2^18126858 is an apocalyptic number.

18126858 is an abundant number, since it is smaller than the sum of its proper divisors (18289302).

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

18126858 is a wasteful number, since it uses less digits than its factorization.

18126858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541.

The product of its digits is 30720, while the sum is 39.

The square root of 18126858 is about 4257.5647969232. The cubic root of 18126858 is about 262.6883691030.

The spelling of 18126858 in words is "eighteen million, one hundred twenty-six thousand, eight hundred fifty-eight".