18198026 has 16 divisors (see below), whose sum is σ = 34032960. Its totient is φ = 7090080.

The previous prime is 18198017. The next prime is 18198053. The reversal of 18198026 is 62089181.

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 7 ways as a sum of consecutive naturals, for example, 58931 + ... + 59238.

It is an arithmetic number, because the mean of its divisors is an integer number (2127060).

Almost surely, 2^18198026 is an apocalyptic number.

18198026 is a deficient number, since it is larger than the sum of its proper divisors (15834934).

18198026 is a wasteful number, since it uses less digits than its factorization.

18198026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118189.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 18198026 is about 4265.9144388982. The cubic root of 18198026 is about 263.0317011332.

The spelling of 18198026 in words is "eighteen million, one hundred ninety-eight thousand, twenty-six".