18026998 has 8 divisors (see below), whose sum is σ = 29498760. Its totient is φ = 8194080.

The previous prime is 18026959. The next prime is 18027011. The reversal of 18026998 is 89962081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409683 + ... + 409726.

It is an arithmetic number, because the mean of its divisors is an integer number (3687345).

Almost surely, 2^18026998 is an apocalyptic number.

18026998 is a deficient number, since it is larger than the sum of its proper divisors (11471762).

18026998 is a wasteful number, since it uses less digits than its factorization.

18026998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819422.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 18026998 is about 4245.8212397603. The cubic root of 18026998 is about 262.2051013299.

The spelling of 18026998 in words is "eighteen million, twenty-six thousand, nine hundred ninety-eight".