18298489 has 8 divisors (see below), whose sum is σ = 20187360. Its totient is φ = 16447200.

The previous prime is 18298481. The next prime is 18298493. The reversal of 18298489 is 98489281.

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

It is not a de Polignac number, because 18298489 - 2³ = 18298481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18298481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8367 + ... + 10324.

It is an arithmetic number, because the mean of its divisors is an integer number (2523420).

Almost surely, 2^18298489 is an apocalyptic number.

It is an amenable number.

18298489 is a deficient number, since it is larger than the sum of its proper divisors (1888871).

18298489 is a wasteful number, since it uses less digits than its factorization.

18298489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18791.

The product of its digits is 331776, while the sum is 49.

The square root of 18298489 is about 4277.6733161849. The cubic root of 18298489 is about 263.5148391702.

The spelling of 18298489 in words is "eighteen million, two hundred ninety-eight thousand, four hundred eighty-nine".