219011009 has 8 divisors (see below), whose sum is σ = 254541120. Its totient is φ = 184541616.

The previous prime is 219010973. The next prime is 219011033. The reversal of 219011009 is 900110912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 219011009 - 2¹⁶ = 218945473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219011069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264734 + ... + 265559.

It is an arithmetic number, because the mean of its divisors is an integer number (31817640).

Almost surely, 2^219011009 is an apocalyptic number.

It is an amenable number.

219011009 is a deficient number, since it is larger than the sum of its proper divisors (35530111).

219011009 is an equidigital number, since it uses as much as digits as its factorization.

219011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530359.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 219011009 is about 14799.0205419143. The cubic root of 219011009 is about 602.7751160589.

The spelling of 219011009 in words is "two hundred nineteen million, eleven thousand, nine".