2191038288 has 40 divisors (see below), whose sum is σ = 5744671008. Its totient is φ = 719444352.

The previous prime is 2191038271. The next prime is 2191038299. The reversal of 2191038288 is 8828301912.

It is a congruent number.

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, 337431 + ... + 343862.

Almost surely, 2^2191038288 is an apocalyptic number.

It is an amenable number.

2191038288 is an abundant number, since it is smaller than the sum of its proper divisors (3553632720).

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

2191038288 is a wasteful number, since it uses less digits than its factorization.

2191038288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681371 (or 681365 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 2191038288 is about 46808.5279409639. The cubic root of 2191038288 is about 1298.8230547040.

The spelling of 2191038288 in words is "two billion, one hundred ninety-one million, thirty-eight thousand, two hundred eighty-eight".