2188011268 has 6 divisors (see below), whose sum is σ = 3829019726. Its totient is φ = 1094005632.

The previous prime is 2188011251. The next prime is 2188011311. The reversal of 2188011268 is 8621108812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1730393604 + 457617664 = 41598^2 + 21392^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273501405 + ... + 273501412.

Almost surely, 2^2188011268 is an apocalyptic number.

It is an amenable number.

2188011268 is a deficient number, since it is larger than the sum of its proper divisors (1641008458).

2188011268 is a wasteful number, since it uses less digits than its factorization.

2188011268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547002821 (or 547002819 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 2188011268 is about 46776.1827001734. The cubic root of 2188011268 is about 1298.2246511495.

The spelling of 2188011268 in words is "two billion, one hundred eighty-eight million, eleven thousand, two hundred sixty-eight".