18248889 has 8 divisors (see below), whose sum is σ = 24555520. Its totient is φ = 12054096.

The previous prime is 18248849. The next prime is 18248891. The reversal of 18248889 is 98884281.

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

It is not a de Polignac number, because 18248889 - 2¹⁷ = 18117817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18248809) 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 in 7 ways as a sum of consecutive naturals, for example, 27577 + ... + 28230.

It is an arithmetic number, because the mean of its divisors is an integer number (3069440).

Almost surely, 2^18248889 is an apocalyptic number.

It is an amenable number.

18248889 is a deficient number, since it is larger than the sum of its proper divisors (6306631).

18248889 is a wasteful number, since it uses less digits than its factorization.

18248889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55919.

The product of its digits is 294912, while the sum is 48.

The square root of 18248889 is about 4271.8718379652. The cubic root of 18248889 is about 263.2765287219.

The spelling of 18248889 in words is "eighteen million, two hundred forty-eight thousand, eight hundred eighty-nine".