2199628549 has 2 divisors, whose sum is σ = 2199628550. Its totient is φ = 2199628548.

The previous prime is 2199628523. The next prime is 2199628553. The reversal of 2199628549 is 9458269912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2176875649 + 22752900 = 46657^2 + 4770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199628549 - 2¹⁷ = 2199497477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2199628549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199628349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099814274 + 1099814275.

It is an arithmetic number, because the mean of its divisors is an integer number (1099814275).

Almost surely, 2^2199628549 is an apocalyptic number.

It is an amenable number.

2199628549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199628549 is an equidigital number, since it uses as much as digits as its factorization.

2199628549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The square root of 2199628549 is about 46900.1977501162. The cubic root of 2199628549 is about 1300.5182448536.

The spelling of 2199628549 in words is "two billion, one hundred ninety-nine million, six hundred twenty-eight thousand, five hundred forty-nine".