2188285636 has 6 divisors (see below), whose sum is σ = 3829499870. Its totient is φ = 1094142816.

The previous prime is 2188285607. The next prime is 2188285637. The reversal of 2188285636 is 6365828812.

It can be written as a sum of positive squares in only one way, i.e., 1202702400 + 985583236 = 34680^2 + 31394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2188285636.

It is not an unprimeable number, because it can be changed into a prime (2188285637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273535701 + ... + 273535708.

Almost surely, 2^2188285636 is an apocalyptic number.

It is an amenable number.

2188285636 is a deficient number, since it is larger than the sum of its proper divisors (1641214234).

2188285636 is a wasteful number, since it uses less digits than its factorization.

2188285636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547071413 (or 547071411 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 2188285636 is about 46779.1153828287. The cubic root of 2188285636 is about 1298.2789129684.

The spelling of 2188285636 in words is "two billion, one hundred eighty-eight million, two hundred eighty-five thousand, six hundred thirty-six".