18449000 has 64 divisors (see below), whose sum is σ = 45489600. Its totient is φ = 6984000.

The previous prime is 18448973. The next prime is 18449003. The reversal of 18449000 is 94481.

It is not an unprimeable number, because it can be changed into a prime (18449003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18515 + ... + 19485.

It is an arithmetic number, because the mean of its divisors is an integer number (710775).

Almost surely, 2^18449000 is an apocalyptic number.

18449000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18449000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22744800).

18449000 is an abundant number, since it is smaller than the sum of its proper divisors (27040600).

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

18449000 is a wasteful number, since it uses less digits than its factorization.

18449000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18449000 is about 4295.2299123563. The cubic root of 18449000 is about 264.2353655522.

The spelling of 18449000 in words is "eighteen million, four hundred forty-nine thousand".