2187316128 has 48 divisors (see below), whose sum is σ = 5744190816. Its totient is φ = 728789760.

The previous prime is 2187316111. The next prime is 2187316133. The reversal of 2187316128 is 8216137812.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351250 + ... + 357422.

It is an arithmetic number, because the mean of its divisors is an integer number (119670642).

Almost surely, 2^2187316128 is an apocalyptic number.

It is an amenable number.

2187316128 is an abundant number, since it is smaller than the sum of its proper divisors (3556874688).

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

2187316128 is a wasteful number, since it uses less digits than its factorization.

2187316128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9877 (or 9869 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 2187316128 is about 46768.7516190030. The cubic root of 2187316128 is about 1298.0871528522.

The spelling of 2187316128 in words is "two billion, one hundred eighty-seven million, three hundred sixteen thousand, one hundred twenty-eight".