18846998 has 4 divisors (see below), whose sum is σ = 28270500. Its totient is φ = 9423498.

The previous prime is 18846991. The next prime is 18847001. The reversal of 18846998 is 89964881.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18846998² = 710418667224008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18846991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4711748 + ... + 4711751.

It is an arithmetic number, because the mean of its divisors is an integer number (7067625).

Almost surely, 2^18846998 is an apocalyptic number.

18846998 is a deficient number, since it is larger than the sum of its proper divisors (9423502).

18846998 is an equidigital number, since it uses as much as digits as its factorization.

18846998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423501.

The product of its digits is 995328, while the sum is 53.

The square root of 18846998 is about 4341.3129350463. The cubic root of 18846998 is about 266.1219690522.

The spelling of 18846998 in words is "eighteen million, eight hundred forty-six thousand, nine hundred ninety-eight".