18249003 has 8 divisors (see below), whose sum is σ = 27035600. Its totient is φ = 12165984.

The previous prime is 18248981. The next prime is 18249017. The reversal of 18249003 is 30094281.

It is not a de Polignac number, because 18249003 - 2¹⁰ = 18247979 is a prime.

It is a super-2 number, since 2×18249003² = 666052220988018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 675889 = 18249003 / (1 + 8 + 2 + 4 + 9 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18249043) 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, 337918 + ... + 337971.

It is an arithmetic number, because the mean of its divisors is an integer number (3379450).

Almost surely, 2^18249003 is an apocalyptic number.

18249003 is a deficient number, since it is larger than the sum of its proper divisors (8786597).

18249003 is an equidigital number, since it uses as much as digits as its factorization.

18249003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675898 (or 675892 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18249003 is about 4271.8851810413. The cubic root of 18249003 is about 263.2770769464.

The spelling of 18249003 in words is "eighteen million, two hundred forty-nine thousand, three".