219800490449 has 8 divisors (see below), whose sum is σ = 231461229120. Its totient is φ = 208315101456.

The previous prime is 219800490443. The next prime is 219800490451. The reversal of 219800490449 is 944094008912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219800490449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219800490397 and 219800490406.

It is not an unprimeable number, because it can be changed into a prime (219800490443) 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 7 ways as a sum of consecutive naturals, for example, 43834847 + ... + 43839860.

It is an arithmetic number, because the mean of its divisors is an integer number (28932653640).

Almost surely, 2^219800490449 is an apocalyptic number.

It is an amenable number.

219800490449 is a deficient number, since it is larger than the sum of its proper divisors (11660738671).

219800490449 is a wasteful number, since it uses less digits than its factorization.

219800490449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87674839.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 219800490449 in words is "two hundred nineteen billion, eight hundred million, four hundred ninety thousand, four hundred forty-nine".