219349550839 has 4 divisors (see below), whose sum is σ = 228886487856. Its totient is φ = 209812613824.

The previous prime is 219349550837. The next prime is 219349550851. The reversal of 219349550839 is 938055943912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 219349550839 - 2¹ = 219349550837 is a prime.

It is a super-2 number, since 2×219349550839² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219349550837) 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 3 ways as a sum of consecutive naturals, for example, 4768468474 + ... + 4768468519.

It is an arithmetic number, because the mean of its divisors is an integer number (57221621964).

Almost surely, 2^219349550839 is an apocalyptic number.

219349550839 is a deficient number, since it is larger than the sum of its proper divisors (9536937017).

219349550839 is an equidigital number, since it uses as much as digits as its factorization.

219349550839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536937016.

The product of its (nonzero) digits is 10497600, while the sum is 58.

The spelling of 219349550839 in words is "two hundred nineteen billion, three hundred forty-nine million, five hundred fifty thousand, eight hundred thirty-nine".