2219556309 has 16 divisors (see below), whose sum is σ = 3029597760. Its totient is φ = 1444959360.

The previous prime is 2219556293. The next prime is 2219556323. The reversal of 2219556309 is 9036559122.

It is not a de Polignac number, because 2219556309 - 2⁴ = 2219556293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219556359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18192 + ... + 69065.

It is an arithmetic number, because the mean of its divisors is an integer number (189349860).

Almost surely, 2^2219556309 is an apocalyptic number.

It is an amenable number.

2219556309 is a deficient number, since it is larger than the sum of its proper divisors (810041451).

2219556309 is a wasteful number, since it uses less digits than its factorization.

2219556309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87460.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 2219556309 is about 47112.1673137630. The cubic root of 2219556309 is about 1304.4338367051.

The spelling of 2219556309 in words is "two billion, two hundred nineteen million, five hundred fifty-six thousand, three hundred nine".