.. number 1 is the unit in group operation under multiplication - if we multiply anything with 1 , the number doesn't change ( not even a zero )

.. zero is the unit in case of group operation under addition ( if we add zero to anything , the number doesn't change )

.. manifestation ( cities or brains ) is a multiplicative process ( not additive ) hence the log normal curve ..else it had a normal distribution..

Is that why we say God is "one" ? Mathematically speaking though - "1" is God :-)