18366898 has 8 divisors (see below), whose sum is σ = 30054960. Its totient is φ = 8348580.

The previous prime is 18366869. The next prime is 18366899. The reversal of 18366898 is 89866381.

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

It is not an unprimeable number, because it can be changed into a prime (18366899) 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, 417408 + ... + 417451.

It is an arithmetic number, because the mean of its divisors is an integer number (3756870).

Almost surely, 2^18366898 is an apocalyptic number.

18366898 is a deficient number, since it is larger than the sum of its proper divisors (11688062).

18366898 is a wasteful number, since it uses less digits than its factorization.

18366898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834872.

The product of its digits is 497664, while the sum is 49.

The square root of 18366898 is about 4285.6619092038. The cubic root of 18366898 is about 263.8428146798.

It can be divided in two parts, 183 and 66898, that added together give a square (67081 = 259²).

The spelling of 18366898 in words is "eighteen million, three hundred sixty-six thousand, eight hundred ninety-eight".