18225498 has 8 divisors (see below), whose sum is σ = 36451008. Its totient is φ = 6075164.

The previous prime is 18225491. The next prime is 18225523. The reversal of 18225498 is 89452281.

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

18225498 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18225491) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1518786 + ... + 1518797.

It is an arithmetic number, because the mean of its divisors is an integer number (4556376).

Almost surely, 2^18225498 is an apocalyptic number.

18225498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18225498 is a wasteful number, since it uses less digits than its factorization.

18225498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037588.

The product of its digits is 46080, while the sum is 39.

The square root of 18225498 is about 4269.1331672835. The cubic root of 18225498 is about 263.1639933899.

The spelling of 18225498 in words is "eighteen million, two hundred twenty-five thousand, four hundred ninety-eight".