388951902 has 16 divisors (see below), whose sum is σ = 864337680. Its totient is φ = 129650616.

The previous prime is 388951897. The next prime is 388951903. The reversal of 388951902 is 209159883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388951903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3601353 + ... + 3601460.

It is an arithmetic number, because the mean of its divisors is an integer number (54021105).

Almost surely, 2^388951902 is an apocalyptic number.

388951902 is an abundant number, since it is smaller than the sum of its proper divisors (475385778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388951902 is a wasteful number, since it uses less digits than its factorization.

388951902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202824 (or 7202818 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 388951902 is about 19721.8635529201. The cubic root of 388951902 is about 729.9592783940.

The spelling of 388951902 in words is "three hundred eighty-eight million, nine hundred fifty-one thousand, nine hundred two".