3902666388 has 12 divisors (see below), whose sum is σ = 9106221600. Its totient is φ = 1300888792.

The previous prime is 3902666377. The next prime is 3902666399. The reversal of 3902666388 is 8836662093.

It is an interprime number because it is at equal distance from previous prime (3902666377) and next prime (3902666399).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 3902666388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162611088 + ... + 162611111.

It is an arithmetic number, because the mean of its divisors is an integer number (758851800).

Almost surely, 2^3902666388 is an apocalyptic number.

It is an amenable number.

3902666388 is an abundant number, since it is smaller than the sum of its proper divisors (5203555212).

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

3902666388 is a wasteful number, since it uses less digits than its factorization.

3902666388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325222206 (or 325222204 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The square root of 3902666388 is about 62471.3245257374. The cubic root of 3902666388 is about 1574.4195577433.

The spelling of 3902666388 in words is "three billion, nine hundred two million, six hundred sixty-six thousand, three hundred eighty-eight".