2183786361 has 27 divisors (see below), whose sum is σ = 3249633933. Its totient is φ = 1413145440.

The previous prime is 2183786329. The next prime is 2183786369. The reversal of 2183786361 is 1636873812.

The square root of 2183786361 is 46731.

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

2183786361 is a `hidden beast` number, since 2 + 1 + 8 + 3 + 7 + 8 + 636 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 145805625 + 2037980736 = 12075^2 + 45144^2 .

It is not a de Polignac number, because 2183786361 - 2⁵ = 2183786329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2183786369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5186931 + ... + 5187351.

Almost surely, 2^2183786361 is an apocalyptic number.

2183786361 is the 46731-st square number.

2183786361 is the 23366-th centered octagonal number.

It is an amenable number.

2183786361 is a deficient number, since it is larger than the sum of its proper divisors (1065847572).

2183786361 is an frugal number, since it uses more digits than its factorization.

2183786361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 461 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The cubic root of 2183786361 is about 1297.3885170456.

It can be divided in two parts, 2183 and 786361, that added together give a square (788544 = 888²).

The spelling of 2183786361 in words is "two billion, one hundred eighty-three million, seven hundred eighty-six thousand, three hundred sixty-one".