2265636988 has 48 divisors (see below), whose sum is σ = 4611237120. Its totient is φ = 966138624.

The previous prime is 2265636983. The next prime is 2265636991. The reversal of 2265636988 is 8896365622.

It is a super-2 number, since 2×2265636988² = 10266221922787424288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265636983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8406 + ... + 67837.

It is an arithmetic number, because the mean of its divisors is an integer number (96067440).

Almost surely, 2^2265636988 is an apocalyptic number.

It is an amenable number.

2265636988 is an abundant number, since it is smaller than the sum of its proper divisors (2345600132).

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

2265636988 is a wasteful number, since it uses less digits than its factorization.

2265636988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76306 (or 76304 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The square root of 2265636988 is about 47598.7078396042. The cubic root of 2265636988 is about 1313.3992846253.

The spelling of 2265636988 in words is "two billion, two hundred sixty-five million, six hundred thirty-six thousand, nine hundred eighty-eight".