2199973549 has 2 divisors, whose sum is σ = 2199973550. Its totient is φ = 2199973548.

The previous prime is 2199973547. The next prime is 2199973571. The reversal of 2199973549 is 9453799912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2198953449 + 1020100 = 46893^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199973549 - 2¹ = 2199973547 is a prime.

Together with 2199973547, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2199973493 and 2199973502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199973543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099986774 + 1099986775.

It is an arithmetic number, because the mean of its divisors is an integer number (1099986775).

Almost surely, 2^2199973549 is an apocalyptic number.

It is an amenable number.

2199973549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199973549 is an equidigital number, since it uses as much as digits as its factorization.

2199973549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 58.

The square root of 2199973549 is about 46903.8756287793. The cubic root of 2199973549 is about 1300.5862344147.

The spelling of 2199973549 in words is "two billion, one hundred ninety-nine million, nine hundred seventy-three thousand, five hundred forty-nine".