7166631388 has 12 divisors (see below), whose sum is σ = 14333262832. Its totient is φ = 3071413440.

The previous prime is 7166631379. The next prime is 7166631391. The reversal of 7166631388 is 8831366617.

7166631388 is an admirable number.

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, 127975533 + ... + 127975588.

Almost surely, 2^7166631388 is an apocalyptic number.

It is an amenable number.

7166631388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7166631388 is a wasteful number, since it uses less digits than its factorization.

7166631388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255951132 (or 255951130 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 7166631388 is about 84655.9589633240. The cubic root of 7166631388 is about 1927.9910896296.

The spelling of 7166631388 in words is "seven billion, one hundred sixty-six million, six hundred thirty-one thousand, three hundred eighty-eight".