2184988991 has 2 divisors, whose sum is σ = 2184988992. Its totient is φ = 2184988990.

The previous prime is 2184988987. The next prime is 2184988997. The reversal of 2184988991 is 1998894812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2184988991 - 2² = 2184988987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2184988991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2184988997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092494495 + 1092494496.

It is an arithmetic number, because the mean of its divisors is an integer number (1092494496).

Almost surely, 2^2184988991 is an apocalyptic number.

2184988991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2184988991 is an equidigital number, since it uses as much as digits as its factorization.

2184988991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 59.

The square root of 2184988991 is about 46743.8658114624. The cubic root of 2184988991 is about 1297.6266343585.

The spelling of 2184988991 in words is "two billion, one hundred eighty-four million, nine hundred eighty-eight thousand, nine hundred ninety-one".