219522849 has 16 divisors (see below), whose sum is σ = 360243072. Its totient is φ = 115792128.

The previous prime is 219522769. The next prime is 219522851. The reversal of 219522849 is 948225912.

It is a happy number.

It is not a de Polignac number, because 219522849 - 2⁹ = 219522337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 219522849.

It is not an unprimeable number, because it can be changed into a prime (219522889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401784 + ... + 402329.

It is an arithmetic number, because the mean of its divisors is an integer number (22515192).

Almost surely, 2^219522849 is an apocalyptic number.

It is an amenable number.

219522849 is a deficient number, since it is larger than the sum of its proper divisors (140720223).

219522849 is a wasteful number, since it uses less digits than its factorization.

219522849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804136.

The product of its digits is 103680, while the sum is 42.

The square root of 219522849 is about 14816.3034863626. The cubic root of 219522849 is about 603.2443228849.

The spelling of 219522849 in words is "two hundred nineteen million, five hundred twenty-two thousand, eight hundred forty-nine".