That's the energy carried by each individual photon. In terms of the number of photons, a typical lightbulb emits one two to orders of magnitude more; the numbe

That's the energy carried by each individual photon. In terms of the number of photons, a typical lightbulb emits one two to orders of magnitude more; the number of photons illuminating a surface will reduce with the square of distance (assuming an isotropic radiator). The illuminance in direct sunlight is two or three orders of magnitude greater than in an artificially lit room; sunlight also contains photons at UV wavelengths, which can carry up to two orders of magnitude more energy than visible photons. Sunscreen is opaque at UV wavelengths but effectively transparent at visible wavelengths, partly for aesthetic reasons but mainly because the lower-energy visible photons cause negligible damage to skin. UV photons are sufficiently energetic to break apart bonds in DNA, but visible photons only carry enough energy to heat the skin. Mobile phones are utterly feeble radiators, both in terms of photon energy and the quantity of photons. In terms of your exposure to electromagnetic radiation, they're a rounding error.