UPDATE 1-Interpublic revenue beats estimate on higher ad spending

(Adds details about results, share move)

July 18 (Reuters) - Advertising company Interpublic Group of Cos Inc reported better-than-expected quarterly revenue, boosted by a strengthening international market and higher ad spending in the United States.

The company, whose agencies include McCann Erickson and Draftfcb, said it was well positioned to exceed organic growth target of 3-4 percent for the full year.

Interpublic's clients include General Motors, Unilever and Johnson & Johnson.

Interpublic's revenue rose 5.4 percent to $1.85 billion in the second quarter ended June 30, from a year earlier.

Analysts on average had expected revenue of $1.84 billion, according to Thomson Reuters I/B/E/S.

Net income available to common stockholders rose to $99.4 million, or 23 cents per share, from $79.9 million, or 18 cents per share.

Excluding items, the company earned 25 cents per share, in line with analysts' average estimate.

Interpublic's shares were up 0.89 percent at $19.20 in premarket trading on Friday.

(Reporting by Abhirup Roy in Bangalore; Editing by Maju Samuel)