2184253681 has 2 divisors, whose sum is σ = 2184253682. Its totient is φ = 2184253680.

The previous prime is 2184253633. The next prime is 2184253693. The reversal of 2184253681 is 1863524812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1622800656 + 561453025 = 40284^2 + 23695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2184253681 - 2⁷ = 2184253553 is a prime.

It is a super-2 number, since 2×2184253681² = 9541928285924099522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2184253601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092126840 + 1092126841.

It is an arithmetic number, because the mean of its divisors is an integer number (1092126841).

Almost surely, 2^2184253681 is an apocalyptic number.

It is an amenable number.

2184253681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2184253681 is an equidigital number, since it uses as much as digits as its factorization.

2184253681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 2184253681 is about 46735.9998395241. Note that the first 3 decimals coincide. The cubic root of 2184253681 is about 1297.4810554565.

The spelling of 2184253681 in words is "two billion, one hundred eighty-four million, two hundred fifty-three thousand, six hundred eighty-one".