19967848219 has 12 divisors (see below), whose sum is σ = 23239199592. Its totient is φ = 17084788160.

The previous prime is 19967848213. The next prime is 19967848273. The reversal of 19967848219 is 91284876991.

It is a happy number.

It is not a de Polignac number, because 19967848219 - 2⁷ = 19967848091 is a prime.

It is a super-2 number, since 2×19967848219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19967848213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4851577 + ... + 4855690.

It is an arithmetic number, because the mean of its divisors is an integer number (1936599966).

Almost surely, 2^19967848219 is an apocalyptic number.

19967848219 is a deficient number, since it is larger than the sum of its proper divisors (3271351373).

19967848219 is a wasteful number, since it uses less digits than its factorization.

19967848219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707306 (or 9707295 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 64.

It can be divided in two parts, 1996784 and 8219, that added together give a triangular number (2005003 = T₂₀₀₂).

The spelling of 19967848219 in words is "nineteen billion, nine hundred sixty-seven million, eight hundred forty-eight thousand, two hundred nineteen".