* QUARTERLY CITIGROUP TOTAL REVENUE $18.87 BILLION, UP 3 PERCENT
* Q1 REV VIEW $18.86 BLN - THOMSON REUTERS I/B/E/S
* QUARTER-END COMMON EQUITY TIER 1 CAPITAL RATIO OF 12.1 PCT VS 12.4 PCT AT Q4-END
* QUARTER-END SUPPLEMENTARY LEVERAGE RATIO 6.7 PCT VS 6.7 PCT AT Q4-END
* QUARTERLY CITIGROUP NET CREDIT LOSSES $1.87 BILLION VERSUS $1.71 BILLION
* TANGIBLE BOOK VALUE PER SHARE AT QUARTER-END $61.02 VS $60.16 AT Q4-END
* CITIGROUP INC SAYS IN Q1, CO RECOGNIZED REVENUE GROWTH IN BOTH CARDS AND RETAIL BANKING IN ALL REGIONS Source text for Eikon: Further company coverage: