2236995844281 has 81 divisors (see below), whose sum is σ = 3615712323951. Its totient is φ = 1331734773600.

The previous prime is 2236995844247. The next prime is 2236995844283. The reversal of 2236995844281 is 1824485996322.

The square root of 2236995844281 is 1495659.

It is a perfect power (a square), and thus also a powerful number.

2236995844281 is a `hidden beast` number, since 2 + 2 + 3 + 6 + 9 + 9 + 584 + 42 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72742944681 + 2164252899600 = 269709^2 + 1471140^2 .

It is not a de Polignac number, because 2236995844281 - 2¹¹ = 2236995842233 is a prime.

It is a super-2 number, since 2×2236995844281² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2236995844283) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3010761196 + ... + 3010761938.

Almost surely, 2^{2236995844281} is an apocalyptic number.

2236995844281 is the 1495659-th square number.

2236995844281 is the 747830-th centered octagonal number.

It is an amenable number.

2236995844281 is a deficient number, since it is larger than the sum of its proper divisors (1378716479670).

2236995844281 is an frugal number, since it uses more digits than its factorization.

2236995844281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 818 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 2236995844281 in words is "two trillion, two hundred thirty-six billion, nine hundred ninety-five million, eight hundred forty-four thousand, two hundred eighty-one".