two billion nine hundred ninety nine million nine hundred ninety eight thousand eight hundred thirty seven Pronunciation in english(IPA) :
tuː ˈbɪljən nʌɪn ˈhʌndrəd ˈnʌɪnti nʌɪn ˈmɪljən nʌɪn ˈhʌndrəd ˈnʌɪnti eɪt ˈθaʊz(ə)nd eɪt ˈhʌndrəd ˈθəːti ˈsɛv(ə)n