2231806564 has 81 divisors (see below), whose sum is σ = 4477752153. Its totient is φ = 972807264.

The previous prime is 2231806559. The next prime is 2231806601. The reversal of 2231806564 is 4656081322.

The square root of 2231806564 is 47242.

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

It can be written as a sum of positive squares in only one way, i.e., 330148900 + 1901657664 = 18170^2 + 43608^2 .

It is a super-3 number, since 3×2231806564³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 28250677 + ... + 28250755.

Almost surely, 2^2231806564 is an apocalyptic number.

2231806564 is the 47242-nd square number.

It is an amenable number.

2231806564 is an abundant number, since it is smaller than the sum of its proper divisors (2245945589).

2231806564 is a wasteful number, since it uses less digits than its factorization.

2231806564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The cubic root of 2231806564 is about 1306.8292611715.

Adding to 2231806564 its reverse (4656081322), we get a palindrome (6887887886).

The spelling of 2231806564 in words is "two billion, two hundred thirty-one million, eight hundred six thousand, five hundred sixty-four".